Under what condition does the ideal gas line not apply and gases are considered real? Check all that apply

The weight of carbon that combines with 16 g of oxygen in the formation of CO2 is 12 g.

The law of multiple proportions was given by Dalton in 1803.

According to this law, when two elements combine to form more than one compound, the masses of one element that combine with a fixed amount of another element, are in the ratio of whole numbers.

For example,

hydrogen combines with oxygen to produce two compounds, water(H₂O) and hydrogen peroxide(H₂O₂).

Hydrogen + Oxygen ⇒ Water

   2 g               16 g         18 g

Hydrogen + Oxygen ⇒ Hydrogen Peroxide

    2g               32 g                 34 g

Similarly, carbon also reacts with oxygen to form two different compounds, carbon dioxide(CO₂) and carbon monoxide(CO).

Carbon + Oxygen ⇒ Carbon Dioxide

 12 g          32 g                44 g

Carbon+ Oxygen  ⇒  Carbon Monoxide

 12 g           16 g                28 g

Thus, the weight of carbon that combines with 16 g of oxygen in the formation of CO₂ is 12 g.

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The bonding expected for each material is covalent ,ionic and metallic bonds .

About bonds :

The force of attraction that leads to holding of atoms or ions together in a molecule or crystal is said be bonding. Bond formation can happen by either attraction or transfer of electrons. There are single, double, and triple bonds. There are many sorts of bonding namely:

Covalent (sharing of electrons takes place).

Ionic (transfer of electrons takes place)

Metallic (ionized atoms of metals and therefore the sea of electrons around them).

Brass (a copper-zinc alloy)

Brass is an alloy of metal that's copper and zinc. Hence, the metallic bonding is present within the brass.

Rubber

It is a polymer whose monomer unit is isoprene, which may be a covalent compound. The isoprene units are attached in repeated units to make rubber by covalent bonding.

Barium sulfide ()

Due to the large electronegativity difference between barium and sulfur, barium sulfide is an ionic compound. Thus, ionic bonding is present in barium sulfide.

Solid xenon

Only xenon atoms are present in solid xenon which are interacted by weak Van der Waal's interactions.

Bronze

Bronze is an alloy of metal that's copper and tin. Hence, the metallic bonding is present within the brass.

Nylon

It is a polymer whose monomer unit is caprolactam, which may be a covalent compound. The caprolactam units are attached in repeated units to make nylon by covalent bonding.

Aluminum phosphide ()

Aluminum phosphide may be a covalent compound and thus involves covalent bonding.

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Molarity of sucrose = 0.116 M .

Volume of solution = 0.5 liter

Mass of sucrose in gram = 20 gram

Molar mass of sucrose 342.3 g/mol

Molarity of sucrose

Computation:

Mole of sucrose = Mass of sucrose in gram / Molar mass of sucrose

Mole of sucrose = 20 / 342.3

Mole of sucrose = 0.058 (Approx.)

Molarity of sucrose = Mole of sucrose / Volume of solution

Molarity of sucrose = 0.058 / 0.5

Molarity of sucrose = 0.116 M

A substance's molarity (M) is the volume of solution in which it is present. The amount of a solute in moles per liter of a solution is known as molarity. A solution's molar concentration is another name for molarity.

The amount of solute in one mole per liter of solution is known as molarity. For instance, when table salt is dissolved in water, the solute is salt, and the solution is water. 58.44 grams make up one mole of sodium chloride. One molar solution, often known as 1M, is created when 58.44 grams of sodium chloride are dissolved in one liter of water.

The quantity of solute in one mole of solution per liter is known as molarity.

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Answer:

Igneous rocks (from the Latin word for fire) form when hot, molten rock crystallizes and solidifies. The melt originates deep within the Earth near active plate boundaries or hot spots, then rises toward the surface.

Explanation:

Answer:

As a Symbol

Explanation:

The mass expression for the system is K= (aH₂)² × aO₂ / (aH₂O)² = 5.31× 10⁻¹⁰.

First, we have to write a balanced chemical equation, i.e

2H₂O(g) ⇄2H₂(g)+O₂(g)

Now, from the above equation we can write mass action expression,

K= (aH₂)² × aO₂ / (aH₂O)² = 5.31× 10⁻¹⁰.

The mass action law provides simple method to write the expression for the equilibrium constant of any reaction. it is a universal law and applicable to all chemical reactions.

The ratio of the concentrations of the reactants and products is known as Equillibrium constant. It is represented as (K).

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Calcium oxide is used to remove the pollutant so2 from smokestack gases. the overall reaction is:

CaO(s)+SO2​(g)+ 1/2 O2​(g)CaSO4​(s)

What is calcium oxide?

Calcium oxide (CaO), commonly referred to as quicklime or burnt lime, maybe a  widely used chemical compound.  it's a white, caustic, alkaline, crystalline solid at temperature.

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Failure to mix a specimen containing an anticoagulant by inverting the sealed specimen container several times after collection of the specimen is due to the clots in specimen.

Clots in specimen or clotted specimen refers to an abruptly clotted blood specimen in which clotting occurs in that tube which contains anticoagulant. A specimen is clotted when the anticoagulant in the tube is not adequately mixed.

To mix and ensure adequate anticoagulation of the specimen, tube filled with the blood has to be inverted 8 - 10 times immediately, so that clots in specimen do not occur.

Specimen is supposed to be mixed immediately to ensure that anticoagulant in the tube has been fully dissolved with the specimen, which in return maintains the effective anticoagulant-to-specimen ratio and provides a specimen free from any clots.

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The value of k is 24.44 kPa[tex]m^{3}[/tex] using the given model of pressure and volume .

Given data,

P= 36kPa

V = 0.679[tex]m^{3}[/tex]

According to the given model,

P = k/V

where, P = pressure in kPa

V = volume occupied by gas

k = proportionality constant

Plugging in the values in the respective model we get,

P = k/V

36 = k/0.679

k = 24.44 kPa[tex]m^{3}[/tex]

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5.0 g of a and 6.0 g of b will obtain 11g of c and d, according to the law of conservation of mass.

What is law of conservation of mass?

The law of conservation of mass, also known as the principle of mass conservation, states that for any system closed to all transfers of matter and energy, the system's mass must remain constant over time because the mass of the system cannot change, meaning that neither more nor less can be added or taken away.

This law states that regardless of the physical or chemical change, the total mass of the products and the total mass of the reactants stay the same. Also referred to as the "law of indestructibility of matter," the law of conservation of mass.

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Two substances, a and b were heated. Both substances change color. when cooled, both substances return to their original colors.

What is a physical change?

A physical alteration only affects the object's shape; the object's interior structure (its molecules) remain unaltered. It is possible to change the created element back into the original thing. A alteration that can be undone is reversible. The condition, shape, or size of an object can change due to a physical change.

Here, since after heating both the substances a and b change colour and again on cooling return back to their original form (previous colour), thus we can conclude that a physical change occurs in them on heating which reverts back on cooling, being a reversible process.

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Answer:

the weight

Explanation:

becouse the moon has less mass then earth the gravitational attraction on the Moon is much less than it is on Earth since the moon has less mass this means if you where to go to the moon your mass will stay the same but your weight will change

hope it helps

Answer:

. In the United States, a standard letter-sized piece of paper is 8.5 inches wide by 11 inches long. The international standard for a letter-sized piece of paper is different. The international standard is based on SI units: 21.0 cm wide by 29.7 cm long. a. Convert 21.0 cm to inches. Show your dimensional analysis setup. b. Convert 29.7 cm to inches. Show your dimensional analysis setup. c. State the dimensions, in inches, of the international standard for a letter-sized piece of paper. d. Which piece of paper is longer: a U.S. letter-sized piece of paper, or an international letter-sized piece of paper? e. Suppose the United States adopted the international standard for letter-sized paper. Explain at least two things that might result from this change

Answer: C. Positive nucleus surrounded by a blob of negative charges

Atomic mass refers to an element's average weight, whereas mass number refers to the number of nucleons.

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Answer:

a

Explanation:

potential energy is something that could happen but haven't yet

The  type of compound is formed between coach and a carboxylic acid alcohol + carboxylic acid → ester + water.

How carboxylic acids are formed?

A acid is produced after the acidic hydrolysis of esters and carboxylates are produced after the basic hydrolysis of an ester.

What are the functional group of alcohol and carboxylic acid?

Alcohols contain the hydroxyl functional group and may be primary, secondary, or tertiary. Ethers are compounds with an oxygen atom bonded to 2 alkyl groups. Aldehydes and ketones contain the carbonyl functional group

Can a compound be a acid and an alcohol?

Esters are represented by the formula RCOOR', where R and R' are hydrocarbon groups. The ester, which is compound derived from a carboxylic acid and an alcohol in which the OH of the acid is replaced by an OR group, looks somewhat sort of a n ether and also somewhat like a carboxylic acid.

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Thermal equilibrium is established after a while as a result of heat transfer between the water and the air in the room.

Option B is correct

What is Thermal equilibrium?

If there is no net transfer of thermal energy when two physical systems are connected by a heat-permeable route, then they are in thermal equilibrium. Thermal equilibrium is in accordance with the first law of thermodynamics.

When a system's internal temperature is both uniformly distributed and stable over time, it is considered to be in thermal equilibrium with itself. Systems that are in thermal equilibrium are always in systems that are in thermodynamic equilibrium, while the reverse is not always true.

The two systems may reach thermal equilibrium without achieving thermodynamic equilibrium if the connection between them allows the transfer of energy as a "change in internal energy" but not the transfer of matter or energy as work.

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468 KJ of electrical energy is converted to light and thermal energy by a 130 w light bulb in one day.

Electrical energy is produced when electrically charged particles move, producing energy. Electrical energy is a general term that describes the energy that has been transformed from electric potential energy. Electric current and electric potential are given by an electrical circuit that serves as the source of this energy (e.g., provided by an electric power utility). This electric potential energy stops being electric potential energy after it has been changed into another form of energy.

P = 130W  is the lightbulb's power.

Within an hour, we must locate the electrical energy that the lightbulb generated. We are aware that the amount of electrical energy generated per unit of time is what provides electricity.

1 hour equals 3600 seconds.

p=E/T

E= p * T

E= 130 * 3600

E= 468000 joule

E = 468 kJ

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The form of carbamate mainly used as a herbicide is dithiocarbamate.

The esters of carbamic acid is are known as Carbamate compounds. They are mainly used as  insecticides and referred as N-methylcarbamate. The general formula for  RHNCOOR'. Carbamate compounds are highly soluble in water, polar and are chemically reactive. Carbamates can be easily hydrolyzed, they have low level of persistence in soil as well as water.

Dithiocarbamates are the small group of organic molecules. They have been extensively used in agricultural industry for more than 50 years.  They have strong chelating ability for inorganic species and have anti-oxidant property. Molecular weight of dithiocarbamate is 171.26.

Carbon disulfide with ammonium or either primary/secondary amine gives Dithicarbamates in presence of NaOH or amine. The reaction is an exothermic reaction.

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When there is less natural gas, a luminous flame will appear.

A luminous flame is one that produces more light from a fuel source with inefficient combustion. In other words, there is not enough oxygen available for stoichiometric combustion when combustion occurs. For more effective combustion, this emits light that is more in the yellow-orange range of the visible light spectrum as opposed to a more blue-nearly colorless region.

An acetylene torch is a good illustration of luminous falme because the first ignition is normally carried out in the presence of only acetylene, which produces a very sooty, bright, yellowish-red flame. The flame receives more of the necessary oxygen for effective combustion when the oxygen valve is opened, and the flame changes color to blue.

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The shell is spherically symmetrical orbital and two electrons are found in the N shell of the atom.

The electron configuration is defined as the manner in which the electrons are arranged in an atom. The electron present in an atom are arranged in subshells and shells. The shells are choose according to the principal quantum number in which the subshells are taken by the orbital quantum number.

The orbital in which the electron is found has a direct relation to the energy of the electron.

Thus, we concluded that the "4s^2" refers that it is spherically symmetrical orbital and the two electrons are found in the N shell of the atom.

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Answer:

Krypton

Explanation:

They're both inert gases

If the frog cells swell and burst while the human cells shrink means that the solution will be hypotonic for frog cells while for human cells the solution will be hypertonic.

These changes will occur because in the frog cell there will be higher concentrations of ions than in the extracellular space, so water will enter the cell by osmosis to equalize the concentrations of the cells. While in the human cell there will be a lower concentration of ions than outside the cell, for this reason the water leaves it in order to equalize the concentrations both inside and outside the cell. Being then the hypotonic solution for the frog cell and hypertonic for the human cell.

Therefore, we can confirm that if the frog cells swell and burst while the human cells shrink means that the solution will be hypotonic for frog cells while for human cells the solution will be hypertonic.

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2 precipitation reactions will occur.

A "chemical reaction occurring in an aqueous solution when two ionic bonds combine, yielding the creation of an insoluble salt" is what is meant by the term "precipitation reaction." Precipitates are the insoluble salts created during precipitation reactions. Precipitation reactions are often double displacement events that result in the formation of the precipitate, a solid form of residue.

The creation of insoluble salts that precipitate out of the solution results from these reactions when two or more solutions with various salt concentrations are mixed. The chemical reaction between potassium chloride and silver nitrate, in which solid silver chloride is precipitated out, is one of the greatest examples of precipitation reactions. This is the precipitation reaction's byproduct, the insoluble salt.

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Answer:

Positive.

Explanation:

The slope is positive and increasing, thus meaning there is a positive correlation between time spent studying each day and performance.

Taking into account the definition of Avogadro's Number, 0.02341 moles of carbon are 1.41×10²² atoms of carbon.

Avogadro's Number is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.

You can apply the following rule of three: if 6.023×10²³ atoms are contained in 1 mole of carbon, then 1.41×10²² atoms are contained in how many moles of carbon?

amount of moles of carbon= (1.41×10²² atoms × 1 mole)÷ 6.023×10²³ atoms

amount of moles of carbon= 0.02341 moles

Finally, 0.02341 moles of carbon are 1.41×10²² atoms of carbon.

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true, I'm not 100% sure if it's true though

the molar solubility of marble (i.e., [ca2 ][ca2 ] in a saturated solution) in normal rainwater, for which Ph=5.60ph=5.60 is 0.0142.

A saturated solution is a solution that contains maximum amount of solute that can be dissolved under the condition at which the solution exists.

In chemistry, after studying solutions and properties of solution, one can understand that a solution can reach a status of saturation. This state is when solution has reached a point in which no more solute can be added. Addition of solute after this point would result in solid precipitate or gas being released. Such mixture is called a saturated solution.

Ksp of(CaCO3)= 4.5 x 10 -9

Ka1 for (H2CO3) =  4.7 x 10^-7

Ka2 for the (H2CO3) = 5.6 x 10 ^-11

1) The equation 1 for Ksp = 4.5 x 10^-9

CaCO3(s)→ Ca +2(a q)    +  CO3-2(a q)  

2) The equation 2 for Ka1 = 4.7 x 10^-7

H2CO3- + H2O → HCO3- + H3O+

3) equation 3 for Ka2 = 5.6 x 10^-11

HCO3-(a q) + H2O(l) → CO3-2 (a q)  + H3O+(a q)

so, form the equation 1& 2&3 we can get the overall equation:

CaCO3(s)  +  H+(a q)  → Ca2+(a q)   + HCO3-(a q)

note: you could get the overall equation by adding the equation 1 to the inverse of equation 3 as the following:

when inverse of equation 3 is :

CO3-2 (a q) + H3O+ (a q) ↔ HCO3- (a q) + H2O(l)  Ka2^-1 = 1.79 x 10^10

when we add it to the equation 1

CaCO3(s) ↔ Ca2+(a q)  +  CO3-2(a q)   Ksp = 4.5 x 10^-9

∴ overall equation will be as we have mentioned before:

when H3O+ = H+

CaCO3(s) + H+(a q)  ↔ Ca2+ (a q) + HCO3-(a q)   K= 80.55

from overall equation:

∴K = [Ca2+][HCO3-] / [H+]

when we have [Ca2+] = [HCO3-] we can assume both = X

∴K = X^2 / [H+]

when we have the PH = 5.6 we can get [H+]

PH = - ㏒[H+]

5.6 = -㏒[H]

∴[H] = 2.5 x 10^-6

so, by the substitution on K expression:

∴ 80.55 = X^2 / (2.5 x10^-6)

∴X = 0.0142

∴[Ca2+] = X = 0.0142.

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Final temp = 108.05.

What is the boiling point of the automobile radiator fluid prepared by mixing 1.09 l of ethylene glycol (hoch2ch2oh, density = 1.114 g/ml) with 1.16 l of water (density = 1.000 g/ml)?

Delta T = 1*.52*1000*1.114*1000/1160*62

           =8.05 deg C

final temp = 108.05

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