The Kw at 75 degrees Celsius is 1. 995 x 10⁻¹³. What is the pOH of water at this temperature?

Answers

Answer 1

At 75 degrees Celsius, water's autoionization constant, Kw, is 2.0 10 13. The quantity of dissociation of water molecules to form hydronium and hydroxide ions is indicated by the autoionization constants of water.

It should be remembered that the autoionization constant rises as the temperature rises. Kw equals 1.0 x 10-14 [H+][OH-]. Hence, one may determine the [H+] or [OH-] as needed for any liquid at 25°C in any given aquatic condition. Indicate if the substance is acidic, basic, or neutral.

Kwh of electricity are units of energy that represent one megawatt of electricity for one hour (unit symbol: kWh or kWh; frequently abbreviated as kWh). It represents 3.6 megajoules (MJ) in SI-derived units with specific names.

To know more about Celsius click here .

brainly.com/question/1373930

#SPJ4

Answer 2

At 75 degrees Celsius, water's autoionization constant, Kw, is 2.0 10 13. Water's pOH at 75 degrees Celsius is 6.85 as a result.

Using the relationship between the amounts of hydrogen ions (H+) and hydroxide ions (OH) and the ion product constant for water (Kw), we can begin to solve this issue:

Kw = [H⁺][OH⁻]

Kw = [H⁺][OH⁻]

1.995 x 10⁻¹³ = [H⁺][OH⁻]

Since water is neutral, the concentration of hydrogen ions and hydroxide ions must be equal.

[H⁺] = [OH⁻]

Hence, the equation can be rewritten as follows:

1.995 x 10⁻¹³ = [OH⁻]²

When we solve for [OH], we get:

[OH⁻] = √(1.995 x 10⁻¹³) = 1.414 x 10⁻⁷

We can now apply the correlation between pOH and [OH]:

pOH equals -log[OH]

By entering [OH] as the value, we obtain:

pOH is equal to -log(1.414 x 107) = 6.85.

Water's pOH at 75 degrees Celsius is 6.85 as a result.

Learn more about Celsius here .

brainly.com/question/1373930

#SPJ4


Related Questions

Compose the cathode and anode processes of electrolysis of an aqueous solution Li2SO4, the total electrolysis equation

Answers

Answer:

Explanation:

The electrolysis of an aqueous solution of Li2SO4 involves the following processes:

At the cathode:

2H2O + 2e- → H2 (g) + 2OH-

At the anode:

2OH- → 1/2O2 (g) + H2O + 2e-

The overall reaction for the electrolysis of Li2SO4 is:

2Li2SO4 (aq) + 2H2O (l) → 2LiOH (aq) + H2 (g) + SO2 (g) + 1/2O2 (g)

Note: The reaction also produces SO2 gas in addition to H2 and O2.

Antifreeze containing ethylene glycol is also needed in automobiles in extremely hot climates. Using what you know about other colligative properties, explain why this is so

Answers

Antifreeze containing ethylene glycol is also needed in automobiles in extremely hot climates b/c Antifreeze raises the coolant boiling point and lowers its freezing point. This prevent the system from building up pressure.

The particles in…….can be separated from heterogeneous mixtures by passing the mixture through a filter.
-suspension
-solution
-colloid
-pure substance

Answers

The particles in the solution can be separated from heterogeneous mixtures by passing the mixture through a filter (option b).

How particles in the solution can be separated?

The particles in the solution can be separated by using different types of methods such as for example a filter that is able to separate particles depending on their size or net charge.

Therefore, with this data, we can see that particles in the solution can be separated depending on their sizes, electrical charges, etc, and for that purpose, we can use a filter of any other type of method.

Learn more about the separation of particles here:

https://brainly.com/question/13955511

#SPJ1

The formation of hydrazine (N2H4) from its elements takes place by the following reaction equation.


N2 (g) + 2 H2 (g) → N2H4 (g)


What are the volumes of N2 gas and H2 gas required to form 28. 5 grams of N2H4 at 30oC and 1. 50 atm?

Answers

The volumes of N₂ gas and H₂ gas required to form 28.5 grams of N₂H₄ at 30oC and 1.50 atm are 14.3 L and 28.6 L, respectively.

To determine the volumes of N₂ gas and H₂ gas required to form 28.5 grams of N₂H₄ at 30oC and 1.50 atm, we need to use the ideal gas law to calculate the number of moles of each gas needed, and then use the balanced chemical equation to determine the volume of each gas.

Calculate the number of moles of N₂H₄

The molar mass of N₂H₄ is:

Molar mass N₂H₄ = 2 x molar mass N + 4 x molar mass H

Molar mass N₂H₄ = 2 x 14.01 g/mol + 4 x 1.01 g/mol

Molar mass N₂H₄ = 32.05 g/mol

The number of moles of N₂H₄ can be calculated as follows:

n(N₂H₄) = mass / molar mass

n(N₂H₄) = 28.5 g / 32.05 g/mol

n(N₂H₄) = 0.890 mol

Determine the number of moles of N₂ and H₂ required

From the balanced chemical equation, we see that 1 mole of N₂ reacts with 2 moles of H₂ to produce 1 mole of N₂H₄. Therefore, the number of moles of N₂ and H₂ required can be calculated as follows:

n(N₂) = n(N₂H₄) = 0.890 mol

n(H₂) = 2 x n(N₂H₄) = 1.780 mol

Use the ideal gas law to calculate the volumes of N2 and H2

The ideal gas law is given by:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant (0.0821 L atm/mol K), and T is the temperature in Kelvin.

We are given P = 1.50 atm and T = 30oC = 303 K.

For N₂ gas:

n(N₂) = 0.890 mol

R = 0.0821 L atm/mol K

T = 303 K

P = 1.50 atm

Solving for V, we get:

V(N₂) = n(N₂)RT/P

V(N₂) = 0.890 mol x 0.0821 L atm/mol K x 303 K / 1.50 atm

V(N₂) = 14.3 L

For H₂ gas:

n(H₂) = 1.780 mol

R = 0.0821 L atm/mol K

T = 303 K

P = 1.50 atm

Solving for V, we get:

V(H₂) = n(H₂)RT/P

V(H₂) = 1.780 mol x 0.0821 L atm/mol K x 303 K / 1.50 atm

V(H₂) = 28.6 L

To know more about ideal gas law here

https://brainly.com/question/4147359

#SPJ4

HELP Will GIVE BRAINIEST the soil textural triangle

Answers

According to the information in the graph, the soil with the composition of Sand: 20%, Clay 50% and Silt 30%, would be a silty clay soil.

What is the soil texture triangle?

The Soil Texture Triangle is a term to refer to a soil analysis tool that is used to calculate the percentage of each component in a soil. The components used in this graph are: Clay, silt and sand. For example, if a soil contains 60% sand, 30% silt and 10% clay, it corresponds to a sandy loam texture.

According to the above, we can infer that a soil with the components of Sand: 20%, Clay 50% and Silt 30% would be a silty clay soil.

Note: This question is incomplete. Here is the complete information:

Classify the soil based on its composition: Sand: 20%, Clay 50% and Silt 30%.

Learn more about soil in: https://brainly.com/question/23813511

#SPJ1

Alcohols are a key intermediate in organic synthesis since they can oxidized to carbonyl containing functional groups. In this tutorial, we will cover: 1. what happens in an oxidation reaction 2. oxidation of secondary alcohols to ketones 3. oxidation of primary alcohols to aldehydes or carboxylic acids 4. oxidation reagents and how we can control oxidation The previous example showed the simplest alcohol and the oxidation products expected. Note that the oxidation of an alcohol to a higher oxidation state involves loss of hydrogens. This means that tertiary alcohols cannot be oxidized, since it does not have a hydrogen that can be lost. Longer primary and secondary alcohols can also be oxidized. Which of the reactions shown Constitute an oxidation reaction? CH, CHO CH,CH,OH CH,CO,CH CH,CH, OH CH, COH CH CHO - CH.CH OH > OH

Answers

The reactions that constitute oxidation reaction are, CH3CH2OH --> CH3CHO, CH3CHO --> CH3COOH, CH3CH2CH2OH --> CH3COCH3.

An oxidation reaction is a chemical reaction in which an atom or molecule loses one or more electrons. In the case of alcohols, oxidation typically involves the loss of hydrogen atoms and the addition of oxygen atoms to form a carbonyl-containing functional group.

The reactions that constitute an oxidation reaction are the ones that involve the loss of hydrogen atoms and the addition of oxygen atoms. In the examples given, the following reactions are oxidation reactions:

1) CH3CH2OH --> CH3CHO (oxidation of a primary alcohol to an aldehyde)


2) CH3CHO --> CH3COOH (oxidation of an aldehyde to a carboxylic acid)


3) CH3CH2CH2OH --> CH3COCH3 (oxidation of a secondary alcohol to a ketone)


The other reactions shown do not involve the loss of hydrogen atoms or the addition of oxygen atoms, and therefore do not constitute oxidation reactions.

Oxidation reagents are chemical compounds that are used to carry out oxidation reactions. Some common oxidation reagents include chromic acid (H2CrO4), potassium permanganate (KMnO4), and sodium hypochlorite (NaClO).

The choice of oxidation reagent and the reaction conditions can be used to control the level of oxidation and the products formed.

For example, using a milder oxidation reagent or lower reaction temperatures can help prevent over-oxidation of the alcohol to a carboxylic acid.

To know more about oxidation, refer here:

https://brainly.com/question/15578795#

#SPJ11

The temperature of an ideal gas in a sealed container of volume V is increased from T to 3T. What will happen to the pressure, P of this gas?




a. It increases from P to 2P



b. There is no change



c. It increases from P to 3P.



d. It decreases from P to P/3

Answers

The temperature of an ideal gas in a sealed container of volume V is increased from T to 3T.  The pressure, P of this gas increases from P to 3P. The correct answer is c.


According to the ideal gas law, PV = nRT, where P is pressure, V is volume, n is the number of moles of gas, R is the gas constant, and T is temperature.

If the volume and number of moles of gas are kept constant, then the equation can be simplified to P/T = nR/V. This means that the pressure of the gas is directly proportional to its temperature.

If the temperature of the gas is increased from T to 3T, then the pressure will also increase by a factor of 3. Therefore, the pressure will increase from P to 3P.

So the correct answer is c. It increases from P to 3P.

For more question on gas law click on

https://brainly.com/question/27870704

#SPJ11

Where did the Earth’s “building blocks of life” come from?

Answers

Answer:

Australia about half a century ago, scientists have been tantalized by the possibility that the building blocks of life originated in space

Set 1 - Use the balanced chemical equation for the production of rust to solve:

4 Fe + 3 O2 → 2 Fe2O3
If you produced 0.00521 moles Fe2O3, how many moles of Fe were reacted?

If you need to produce 1.867 mol Fe2O3, how many moles O2 are needed to react?

Given 9.54 mol Fe, how many moles O2 will be needed?

Given 0.578 mol O2, how many moles Fe will be needed to react completely?

Answers

Answer:

Explanation:

0.01042 moles Fe --how to calculate (0.00521/2 moles X 4 moles)  the 2 and 4 are the coefficients in the chemical equation

2.8005 moles O2-- how to calculate  (1.867 / 2 X 3 moles O2)

7.155 moles Fe    calculate it this way (9.54 / 4 moles Fe  X 3 moles O2

0.7707 moles Fe   ---(0.578 / 3 moles O2  X 4 moles Fe)

Trans-1,3-dichlorocyclobutane has a meausurable dipole moment. Explain why the individual dipole g

Answers

Trans 1,3-Dichlorocyclobutane. The C-cl bonds are opposed to one another, thus the dipole moment should cancel out and be zero. Nevertheless, because of the four-member ring strain, cyclobutene is stable in a puckered configuration with three carbons in one plain and one carbon above the plain.

Because one C-Cl bond in cyclobutene [Trans-1,3-dichlorocyclobutane] is axial and the other is equatorial, they won't cancel each other out and the net dipole moment won't be zero. This hopping never stops. When there is a separation of charge, dipole moments happen. They can occur between two ions in an ionic bond or between atoms in a covalent link; dipole moments result from changes in electronegativity. The dipole moment increases with the difference in electronegativity.

Learn more about dipole moment here:

https://brainly.com/question/25385184

#SPJ4

Complete Question:

Trans-1,3-dichlorocyclobutane has a measurable dipole moment. Explain why the individual dipole moments of C-Cl bonds do not cancel each other t produce a zero net dipole moment?

CHEMISTRY EXCERCISES

Answers

1. (a) Class: carboxylic acid; IUPAC name: propanoic acid. (b) Class: alkyl halide; IUPAC name: chloro-1-propane. (c) Class: alkane; IUPAC name: 1-propanecarbonitrile. (d) Class: ester; IUPAC name: ethyl methanoate.

What is IUPAC name?

IUPAC stands for International Union of Pure and Applied Chemistry. It is an international scientific organization responsible for developing and promoting international standards in the fields of chemistry and chemical nomenclature. The IUPAC name of a chemical compound is an unambiguous, systematic method for naming compounds according to their chemical structure and physical properties.

(e) Class: ether; IUPAC name: dimethyl ether. (f) Class: acyl halide; IUPAC name: 1-chloro-2,2-difluoropropane-1-carbonyl chloride.

2. (a) Hexanoic acid: CH3CH2CH2CH2CH2COOH. (b) Butanal: CH3CH2CHO. (c) Pent-1-ene: CH2=CHCH2CH2CH3. (d) 1-bromo-2-methylbutane: CH3CH2CH(Br)CH3. (e) Ethyl methanoate: CH3COOCH2CH3. (f) Methoxypropane: CH3OCH2CH3. (g) But-2-yne: CH3C≡CHCH3.

3. Answer: B. CH3CONH2 is an amine because it contains an amine group (NH2).

4. Answer: A. 1-iodopropane is a member of the same homologous series as 1-bromopropane because they both have the same molecular formula (C3H7Br or C3H7I) and the same functional group (halogen).

To learn more about IUPAC name
https://brainly.com/question/28872356
#SPJ1

A container of gas has a pressure of 745 mm Hg and room temperature is 18 C. How does the temperature of the system change when the pressure is changed to 1 atm?

Answers

To determine how the temperature of the system changes when the pressure is changed from 745 mm Hg to 1 atm, we can use the combined gas law, which relates the pressure, volume, and temperature of a gas:

(P1V1)/T1 = (P2V2)/T2

where P1, V1, and T1 are the initial pressure, volume, and temperature, respectively, and P2 and V2 are the final pressure and volume, respectively.

We can assume that the volume of the container remains constant, so V1 = V2. We also need to convert the initial pressure from mm Hg to atm:

P1 = 745 mm Hg x (1 atm/760 mm Hg) = 0.980 atm

Then, we can rearrange the equation to solve for T2:

T2 = (P2/T1) * (V1/P1)

Substituting the values we know, we get:

T2 = (1 atm/0.980 atm) * (T1)

T2 = 1.02T1

Therefore, the temperature of the system will increase by 2% when the pressure is changed from 745 mm Hg to 1 atm, assuming the volume remains constant.

What increases when a wave period decreases.

depth

distance

energy

speed

time

volume

Answers

Speed is the correct answer

Imagine there are two large boxes that have the same dimension standing on top of a shaking platform. A student fills up the first box with wooden balls of equal size. The same student fills up the second box with hollow bronze balls of equal size. The bronze balls have a bigger radius but weigh less than the wooden balls. Which set of balls has higher atomic packing factor (APF)? The size of the boxes are much larger than the size of the balls.

a) Box filled with wooden balls has higher APF.

b) Box filled with bronze balls has higher APF. Neither.

c) The APF of both boxes are the same.

d) There is not enough information to make a comparison

Answers

The right response is b) APF is higher for a box filled with bronze balls.

The atomic packing factor (APF) is a measure of the amount of space that is occupied by atoms in a crystal structure. It is calculated by dividing the total volume of atoms in a unit cell by the volume of the unit cell. The higher the APF, the more closely packed the atoms are in the crystal structure.

In this case, since the boxes have the same dimensions, the unit cell for both boxes will be the same. However, the size and weight of the balls differ. The wooden balls are more massive than the hollow bronze balls, but they are smaller in size. This means that the wooden balls will have a higher density and will occupy less space than the hollow bronze balls.

Since the APF is calculated based on the volume of atoms in the unit cell divided by the volume of the unit cell, the size and density of the balls will affect the APF. In this case, the hollow bronze balls will occupy more space in the unit cell compared to the wooden balls, as they have a larger radius and lower density. Therefore, the box filled with hollow bronze balls will have a higher APF compared to the box filled with wooden balls.

Therefore, the correct answer is b) Box filled with bronze balls has higher APF.

To learn more about APF refer to:

brainly.com/question/14619166

#SPJ4

2. From class discussions and observations, write a general rule for what happens to particles in
solids, liquids, and gases when they are warmed or cooled. Are there exceptions to this rule?
(3 Marks)
Warmed:
Cooled:
Exceptions:

Answers

Answer:

General rule:

When solids, liquids, and gases are warmed, the particles gain kinetic energy and move faster, resulting in an increase in volume for liquids and gases, and a small expansion for solids. When cooled, the particles lose kinetic energy and move slower, resulting in a decrease in volume for liquids and gases, and a small contraction for solids.

Exceptions:

There are some exceptions to this rule, such as water, which exhibits anomalous behavior upon cooling. Water contracts upon cooling until it reaches 4°C, then it begins to expand upon further cooling. Additionally, some solids exhibit a unique property called thermal expansion, where they expand upon heating and contract upon cooling, opposite to the expected behavior.

How many grams are found in 5. 000 mol of carbon tetrachloride

Answers

769.11 grams are found in 5.000 mole of carbon tetra chloride. It is calculated by using Mole concept.

The mole is defined as the unit of amount of substance in the International System of Units (SI). The quantity amount of the substance is a measure of how many elementary entities of a given substance are in an object or the sample. The mole is known as containing exactly 6.02214076×1023 elementary entities. It is used in chemistry as a convenient way to express amounts of reactants and products of chemical reactions. The molar mass of a substance is defined as the ratio of the mass of a sample of that substance to its amount of substance. It is clear the the amount of substance is given as the number of moles in the sample. One mole of a substance is equal to 6.022 × 10²³ units of that substance such as of atoms, molecules, or ions.  

The number 6.022 × 10²³ is known as the Avogadro's number or the Avogadro's constant. According to the mole concept, the concept of the mole is used to convert between mass and number of particles.

To learn more about Mole Concept

https://brainly.com/question/16488605

#SPJ4

How many grams of ammonia are needed to make 1.25 L solution with a pH of 11.68?​

Answers

The mass (in grams) of ammonia, NH₃ needed to make 1.25 L solution with a pH of 11.68 is 0.102 grams

How do i determine the mass of ammonia needed?

First, we shall determine the hydroxide ion concentration in the solution. Details below:

pH of solution = 11.68pOH = 14 - 11.68 = 2.32Hydroxide ion concentration [OH⁻] =?

pH of a solution is given by the following formula:

pOH = -Log  [OH⁻]

Inputting the various parameters, we have

2.32 = -Log  [OH⁻]

Multiply through by -1

-2.32 = Log [OH⁻]

Take the anti-log of -2.32

[OH⁻] = Anti-log -2.32

[OH⁻] = 0.0048 M

Next, we shall determine the molarity of the ammonia. Details below:

NH₃(aq) + H₂O <=> NH₄⁺(aq) + OH⁻(aq)

From the above equation,

1 mole of OH⁻ is present in 1 mole of NH₃

Therefore,

0.0048 M OH⁻ will also be present in 0.0048 M NH₃

Next, we shall determine the mole of ammonia. Details below:

Volume = 1.25 LMolarity = 0.0048 MMole of ammonia =?

Molarity = Mole / Volume

Cross multiply

Mole of ammonia = molarity × volume

Mole of ammonia = 0.0048 × 1.25

Mole of ammonia = 0.006 mole

Finally, we shall determine the mass of ammonia needed. Details below:

Mole of ammonia = 0.006 moleMolar mass of ammonia = 17 g/molMass of ammonia = ?

Mass = Mole × molar mass

Mass of ammonia = 0.006 × 17

Mass of ammonia = 0.102 grams

Therefore, the mass of ammonia needed is 0.102 grams

Learn more about mass:

https://brainly.com/question/21940152

#SPJ1

if 0.435 g of KMnO4 is dissolved in enough water to give 250 ml of solution, what is the molarity of


KMnO4?

ASAPP PO!! thankyouu!!!!!

Answers

Answer:

M = 0.011 mol/L

Explanation:

Molarity = n/V,
n: No. of moles
V: volume in liters

n of KMnO4 (Molar mass = 158 g/mol) = 0.435/158 = 0.00275 moles

Molarity (M) = 0.00275/0.25 = 0.011 mol/L

what is the common name of the following compound? acetone propanal propanone 1-propyl ketone 2-propyl ketone

Answers

The common name of the following compound is Acetone.

Acetone is an organic compound that is a colorless, volatile, and flammable liquid. This compound is the most basic ketone and has a variety of applications, including as a solvent, a laboratory reagent, and a precursor to a number of other compounds.It is produced naturally by the human body in minute quantities as a metabolic intermediate. Acetone is also produced naturally by certain plants as a metabolic byproduct.

Acetone is miscible with water and a number of organic solvents, making it an excellent solvent for a variety of applications. Because of its high solvency power, it is used to remove substances like paint and glue from surfaces like plastics and metals. It is also used in the production of polycarbonate plastics and other polymeric materials.

acetone propanal propanone 1-propyl ketone 2-propyl ketone is a ketone with three carbon atoms. The IUPAC name of this compound is propanone, but its common name is acetone.

To know more about Acetone please visit :

https://brainly.com/question/2174621

#SPJ11

pls i already asked for help with this but im honestly just so lost and my parents dont understand. i really need this done and ive been trying to understand it and figure it out but i cant

Answers

Answer: 3 ,2, 6

Explanation:

3 Cu(NO3)2 + 2 K3PO4 → Cu3(PO4)2 + 6 KNO3

Why is it important to monitor pollutants in watershed?

Answers

monitoring pollutants in a watershed is critical for protecting human health, aquatic ecosystems, and the environment.

It provides valuable information for decision-making, compliance with environmental regulations, and early warning of potential environmental problems.

Monitoring pollutants in a watershed is important for several reasons:

Protecting human health: Polluted water can pose serious health risks to humans.

Protecting aquatic ecosystems: Polluted water can harm aquatic plants and animals.

Compliance with environmental regulations: Polluted water can violate environmental regulations and harm the reputation of businesses and organizations.

Early warning of environmental problems: Monitoring pollutants in a watershed can provide early warning of potential environmental problems. This can help officials take preventive measures to protect the environment and public health before serious problems occur.

learn more about pollutant here:

https://brainly.com/question/28519286

#SPJ4

In which of the following reactions is mass and/or
charge not conserved?
A) H₂O → H+ + OH-
B) CIO2 + 2 H2O + 4e → Cl- + 4 OH-
C) H2SO4 + NaOH → Na2SO4 + H+ + 2 OH-
D) ZnCl + H₂O → ZnOH + H+ + Cl−
E) none of the above

Answers

Answer:

The answer is E) none of the above.

In all of the given reactions, mass and charge are conserved. The law of conservation of mass states that the mass of reactants must be equal to the mass of the products in a chemical reaction. The law of conservation of charge states that the total charge of the reactants must be equal to the total charge of the products.

In reaction A, the water molecule dissociates into a hydrogen ion (H+) and a hydroxide ion (OH-), but the total mass and charge are still conserved.

In reaction B, the reduction of CIO2 to Cl- is balanced by the oxidation of water to form OH-. The electrons and charge are conserved.

In reaction C, H2SO4 reacts with NaOH to form Na2SO4, H+ and OH-. The mass and charge are conserved.

In reaction D, ZnCl reacts with water to form ZnOH, H+ and Cl-. The mass and charge are also conserved.

What is the mass of 3.01x 1022 molecules of phosphorus, P4 ? {R.AM for phosphorus is 31} *​

Answers

i believe molar mass of P4 (phosphorus) is 4 x 31 = 124 g/mol (31 is the atomic mass of phosphorus).

To find the mass of 3.01 x 10^22 molecules of P4, we need to first calculate the number of moles of P4 in 3.01 x 10^22 molecules.

Number of moles = Number of molecules / Avogadro's number
Number of moles = 3.01 x 10^22 / 6.022 x 10^23
Number of moles = 0.005

Now that we know the number of moles, we can use the molar mass to calculate the mass:

Mass = Number of moles x Molar mass
Mass = 0.005 mol x 124 g/mol
Mass = 0.62 g

Therefore, the mass of 3.01 x 10^22 molecules of P4 is 0.62 g.

A gas is known to be one of the following nitrogen oxides: NO, NO2, N2O4, or N2O. It has a density of 1.96 g/L at 273 K and 1.00 atm. Determine its identity.

Please write out the steps too, I am so lost on how to start this question. Thank you so much!

Answers

That the calculated molar mass of the gas is closest to the molar mass of N2O. Therefore, the gas is most likely N2O.

What is Density?

Density is a physical property of matter that describes how much mass is contained in a given volume. It is defined as the amount of mass per unit volume, and is typically expressed in units of grams per cubic centimeter (g/cm3) or kilograms per cubic meter (kg/m3).

The gas density and the conditions provided can be used to calculate the molar mass of the gas using the ideal gas law:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.

Rearranging this equation to solve for n/V, we get:

n/V = P/RT

M = m/n

where M is the molar mass, m is the mass of the gas, and n is the number of moles.

Since the density is given in grams per liter, we can assume that 1 liter of the gas has a mass of 1.96 grams. Therefore, the number of moles of the gas in 1 liter can be calculated as:

n/V = P/RT = (1 atm)/(0.08206 L·atm/mol·K × 273 K) = 0.0446 mol/L

The number of grams of the gas in 1 liter can be calculated as:

m = density × volume = 1.96 g/L × 1 L = 1.96 g

Therefore, the molar mass of the gas is:

M = m/n = 1.96 g / 0.0446 mol = 43.9 g/mol

Comparing this molar mass to the molar masses of the possible nitrogen oxides:

NO has a molar mass of 30.01 g/mol

N2O4 has a molar mass of 92.01 g/mol

N2O has a molar mass of 44.01 g/mol

We can see that the calculated molar mass of the gas is closest to the molar mass of N2O. Therefore, the gas is most likely N2O.

Learn more about Density from given link

https://brainly.com/question/1354972

#SPJ1

what happens during an exothermic reaction

Answers

Answer:

During an exothermic reaction, energy is released from the reacting system into the surrounding environment in the form of heat, light, or sound. This means that the products of the reaction have less energy than the reactants, and the overall change in enthalpy (∆H) of the system is negative.

Examples of exothermic reactions include combustion (burning of fuel), oxidation reactions, neutralization reactions, and many types of chemical reactions. In each case, the reaction releases heat or light as a result of the formation of new chemical bonds, which releases energy.

Exothermic reactions are important in many fields, including chemistry, physics, and engineering. They are used in everyday applications such as the burning of fuel in car engines, the production of heat and light from a match or a firework, and the generation of electricity from nuclear reactions.

Explanation:

What are the intermolecular forces present in theobromine?

Answers

The intermolecular forces in theobromine include hydrogen bonding and london dispersion.

Intermolecular bonds: What do they mean?

Molecules can form intermolecular connections with one another. There are different kinds of them, and they are also called are van der Waals forces.

What occurs when intermolecular forces are applied?

Bulk properties like liquid and solid boiling and melting points are governed by intermolecular forces. When the intermolecular attraction interactions that hold molecules together are strong enough for liquids to boil, vapor bubbles are created inside the liquid as a result of the boiling process.

To know more about intermolecular visit:

https://brainly.com/question/9007693

#SPJ1

after you have tried all the materials, add a few drops of dishwashing liquid to the middle of the oil spill. this is the dispersant. answer the questions below. what happened to the oil? why? what happened to the chemicals (dye)? why? what color is the water? why?

Answers

The oil will disperse due to the emulsifying properties of the dishwashing liquid, which breaks the oil down into smaller droplets so it can mix with the water more easily. This reduces the overall surface tension, allowing the oil to spread out more evenly in the water. The chemicals (dye) that were added to the oil will be spread out as well, resulting in a less visible stain. The water will take on the color of the dye, so it will appear as a colored stain on the surface of the water.

The oil disperses because the dishwashing liquid acts as an emulsifier and reduces the surface tension of the oil, allowing it to spread out and mix with the water more easily. The dye is spread out as well, resulting in a less visible stain. The water will take on the color of the dye, giving the water a colored appearance.

Overall, the addition of the dishwashing liquid causes the oil to disperse, the dye to spread out, and the water to take on the color of the dye. This makes the oil less visible, making it easier to clean up.

Know more about surface tension here:

https://brainly.com/question/11348644

#SPJ11

starting from a fatty acid (note: not acyl-coa) with 15 carbons and 3 double bonds, in the muscle, flag question: question 1 question 11 pts how many cycles of beta oxidation will occur? group of answer choices 2 4 5 6 8 flag question: question 2 question 21 pts how many fadh2 will be produced? group of answer choices 2 3 4 5 6 flag question: question 3 question 31 pts how many atps are produced for its complete oxidation to h2o and co2? group of answer choices 98.5 96.5 48.5 90.5 98 flag question: question 4 question 41 pts if a poison is added to block complex iii, how many atp are produced instead? group of answer choices 96.5 98.5 38 35 45

Answers

One FADH2 molecule is created for every beta oxidation cycle. Consequently, after the provided fatty acid is completely oxidised, a total of 7 FADH2 molecules will be created.

How many cycles does a 16 carbon fatty acid go through to convert a four carbon fatty acyl-CoA into two acetyl CoAs?

In seven cycles of this oxidation, a 16-carbon fatty acid loses two carbons as acetyl-CoA, producing a total of eight molecules of acetyl-CoA.

How many cycles of -oxidation would be necessary to break down a 20 C fatty acyl chain?

Nine rounds of beta oxidation are necessary to completely oxidise a fatty acid with a 20-carbon hydrocarbon tail because the organic byproduct of beta oxidation has two carbons.

To know more about oxidation visit:-

https://brainly.com/question/16976470

#SPJ1

configurate the following element using sub level and group each elemnt v(z=23),Ni(z=28),Cu(z=29),zn(z=30),cr(z=24),Mn(z=25)​

Answers

Answer:

To configure the electron sublevels and groups for each element, we can use the following format:

Element symbol: [Electron configuration] Sublevel: Group

V (Z=23): [Ar] 3d3 4s2 Sublevel: 3d, 4s Group: 5, 4

Ni (Z=28): [Ar] 3d8 4s2 Sublevel: 3d, 4s Group: 10, 4

Cu (Z=29): [Ar] 3d10 4s1 Sublevel: 3d, 4s Group: 11, 4

Zn (Z=30): [Ar] 3d10 4s2 Sublevel: 3d, 4s Group: 12, 4

Cr (Z=24): [Ar] 3d5 4s1 Sublevel: 3d, 4s Group: 6, 4

Mn (Z=25): [Ar] 3d5 4s2 Sublevel: 3d, 4s Group: 7, 4

calculate the mass fraction of CH3COOH in 3 litres of its 2M solution if the density of the solution is 0.981g/ml​

Answers

Answer

To calculate the mass fraction of CH3COOH in a 2M solution of 3 liters with a density of 0.981g/ml, we need to use the following steps:

Calculate the molarity of the solution:
Molarity (M) = moles of solute / liters of solution

Since we have a 2M solution of 3 liters, the moles of solute (CH3COOH) can be calculated as:

moles of solute = Molarity x liters of solution
= 2 x 3
= 6 moles of CH3COOH

So, we have 6 moles of CH3COOH in 3 liters of the solution.

Calculate the mass of the solution:
mass of solution = density x volume
= 0.981 g/ml x 3000 ml
= 2943 g

So, we have 2943 g of the solution.

Calculate the mass of CH3COOH in the solution:
mass of CH3COOH = moles of CH3COOH x molar mass of CH3COOH
= 6 x 60.05 g/mol
= 360.3 g

So, we have 360.3 g of CH3COOH in the solution.

Calculate the mass fraction of CH3COOH in the solution:
mass fraction of CH3COOH = mass of CH3COOH / mass of solution
= 360.3 g / 2943 g
= 0.1224 or 12.24%

Therefore, the mass fraction of CH3COOH in a 2M solution of 3 liters with a density of 0.981g/ml is 12.24%
Other Questions
With the points A(-4, -2) B(1, -3) C(2, -5) D(-1, 7).What are the new points if the scale factor of dilation is 3? What is the answers ??? Read the paragraph from the Newsela article "Mistaken Text Leads to Fundraiser."Because Jakeman didn't want to leave her son's side, friends, relatives and neighbors rushed to setup meal plans for ShaunJakeman and Noah's siblings at home.How does the paragraph fit into the overall structure of the text?OIt uses description to explain how the meal plans work.OIt uses cause and effect to explain the purpose behind the mistaken text.OIt explains how Noah's health worsened over time.O It describes Jakeman's problem providing food for her family.G Find the inverse of the following function: f(x) = 2(x - 4)^3 + 7 A discount store is selling 5 small tables with 8 chairs for $115. Three tables with 5 chairs cost $70.Which system of linear equations could be used to find the cost of each table (x) and the cost of each chair (y)?Determine the cost of each table (x) and the cost of each chair (y).answer both question please and thank you Amy is interested in estimating the number of hours of sleep a typical student at her middle school gets on Saturday nights. She asks each of the other students in her science class to write down how many hours of sleep they got last Saturday on a piece of paper passed around the class.Which of the following statements are true?Choose all that are correct.A.Amy should have included students from one other science class.B.To get a good estimate, Amy must have all the students at the school answer the question.C.To estimate the value, Amy must first mix up the data from the science class.D.Amy's results cannot be used to estimate the value she wishes to estimate.E.The sample Amy used is not a true random sample. write a letter to your friend in another school telling him/her about a sports competition held in your area which of the following statement is not true? a. the service-profit chain includes collaboration between marketing, operations, it, and hr managing the competitive landscape. b. the dramatic development of government policies is the most important force transforming service markets. c. the service-profit chain includes collaboration between marketing, operations, it and hr. d. service production and consumption are simultaneous. Zinc an essential trace element for most organisms is present in the active site of the enzyme carboxypeptidase. The zinc most likely functions as a(n)cofactor necessary for enzyme activity. Chin paid $16. 24 for 7 bags of flour that were on sale for 10% off. Each bag contained 2 pounds of flour. What was the regular price for 1 pound of flour Solve triangle ABC given that A = 56, B = 57, and b = 9. 0. Round the length of the sides to the nearest hundredth. A justification for job training programs is that they improve worker productivity. Suppose that you are asked to evaluate whether more job training makes workers more productive. However, rather than having data on individual workers, you have access to data on manufacturing firms in Ohio. In particular, for each firm, you have information on hours of job training per worker (training) and number of nondefective items produced per worker hour (output). (i) Carefully state the ceteris paribus thought experiment underlying this policy question. (ii) Does it seem likely that a firms decision to train its workers will be independent of worker characteristics? What are some of those measurable and unmeasurable worker characteristics?(iii) Name a factor other than worker characteristics that can affect worker productivity.(iv) If you find a positive correlation between output and training, would you have convincingly established that job training makes workers more productive? Explain During year 2, Smith Co. filed suit against West, Inc. seeking damages for patent infringement. On December 31, year 2, Smith's legal counsel believed that it was probable that Smith would be successful against West for an estimated amount in the range of $75,000 to $150,000, with all amounts in the range considered equally likely. In March year 3, Smith was awarded $100,000 and received full payment thereof. In its year 2 financial statements, issued in February year 3, how should this award be reported?a. As a receivable and revenue of $100,000.b. As a receivable and deferred revenue of $100,000.c. As a disclosure of a contingent gain of $100,000.d. As a disclosure of a contingent gain of an undetermined amount in the range of $75,000 to $150,000. The variable rdintens is expenditures on research and development (R&D) as a percentage of sales. Sales are measured in millions of dollars. The variable profmarg is profits as a percentage of sales.Using the data in RDCHEM.RAW for 32 firms in the chemical industry, the following equation is estimated:(i) Interpret the coefficient on log(sales). In particular, if sales increases by 10%, what is the estimated percentage point change in rdintens? Is this an economically large effect?(ii) Test the hypothesis that R&D intensity does not change with sales against the alternative that it does increase with sales. Do the test at the 5% and 10% levels.(iii) Interpret the coefficient on profmarg. Is it economically large?(iv) Does profmarg have a statistically significant effect on rdintens? write a basic program to calculate the area of a circle In many cases, there is a separate ____________ for systems such as antilock brakes, supplemental restraint systems, and many of the engine controls Suppose a city with 400,000 population has been growing at a rate of 4% per year. If this rate continues, find the population of this city in 17 years What is 68+1=What is 69+0= what was the conflict in the letter from washington to hamilton and the letter from hamilton to washington?A. Forcing the opposing sides to compromiseB. Strengthening loyalty to political partiesC. By increasing the division between the two parties Ed wants to borrow $20,000 from a bank to open a small gym. Three banks charge different interest rates. To help decide the best loan option, Ed wants to know the percent profit he will make each month.Part AThe cost to run the gym each month is $5,000. Find Eds total monthly expenses for each loan option.