Answer:
The charge on the compound
Explanation:
The charge on the compound signifies that the compound is not in its neutral state.
Therefore, the oxidation state would be equal to the charge on the compound.
Answer:
The charge on the compound
Explanation:
The charge on the compound signifies that the compound is not in its neutral state.
Therefore, the oxidation state would be equal to the charge on the compound.
Determine whether or not the mixing of each of the two solutions indicated below will result in a buffer.
Drag the appropriate items to their respective bins.
Sinve CH3NH2 is weak base and its salt is CH3NH3Cl, mixing 125.0 mL of CH3NH2 and 120.0 mL of CH3NH3Cl so produce a buffer.
What is a buffer?A buffer is a solution which resists changes to its pH when a small quantity of strong acid or base is added to it..
A buffer is made from a weak acid and its salt or a weak base and its salt.
From the given options, CH3NH2 is weak base and its salt is CH3NH3Cl.
Therefore, mixing 125.0 mL of CH3NH2 and 120.0 mL of CH3NH3Cl so produce a buffer.
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help me this is due soon
Answer:
Hot magma change climate continents drift block sunlight folded mountains form rock deposits
Explanation:
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What does it mean that our solar system is about 25,000 light-years from the center of the Milky Way?(1 point) It took our solar system 25,000 light-years to form. It took our solar system 25,000 light-years to form. It would take about 25,000 years for light to travel from our solar system to the center of the Milky Way. It would take about 25,000 years for light to travel from our solar system to the center of the Milky Way. There are 25,000 stars between our solar system and the center of the Milky Way. There are 25,000 stars between our solar system and the center of the Milky Way. It would take 25,000 years for humans to fly, using a rocket ship, from our solar system to the center of the Milky Way.
Answer: A light year is a measure of distance, for example, there is a big comet 5 light years away, it takes 5 years for light to get to the comet, and just like the galaxy, it would take 25,000 years for light to reach the center of the galaxy.
What separation technique would most likely be used if a solvent were
saved?
A. Melting point separation
B. Distillation separation
C. Density separation
O D. Chromatography separation
The statement, that describes separation technique would most likely be used if a solvent were saved is "distillation separation."
What is separation technique?Separation techniques are methods for separating two different states of matter, such as liquid and solid. Methods that employ variations in physical qualities to separate the components of a mixture, such as evaporation, distillation, filtration, and chromatography, can be used to physically separate the components of a mixture.
Simple distillation is a technique for removing a solvent from a solution. Water, for example, can be extracted from salt solution by simple distillation. If a solvent was saved, the separation procedure would most likely be used is distillation.
Hence the correct option is B.
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how many moles of methane are produced when 4.53 mol co2 reacts
Answer:
2.25 moles
Explanation:
thats correct answer
Thank you
Oxidation Number of Carbon in C6H12O6
Correct option is C)
C
6
H
12
O
6
6x+12−12=0
C has oxidation number = 0
Sorry if my answers wrong.
what is the percent (mass/volume) if 22 g of kcl is added to 75 ml of water to make 83 ml of solution
Considering the definition of volume percentage, the mass/volume percent in this solution is 26.5%.
Definition of mass/volume percentMass/volume percent is a measure of concentration that indicates the number of grams of solute in each 100 mL of solution.
In other words, the volume percent of a component in the solution is defined as the ratio of the mass of solute that is present in a solution, relative to the volume of the solution, as a whole.
The volume percentage of a solution is determined by the following expression:
[tex]mass/volume percent=\frac{mass of solute}{volume of solution}100[/tex]
Mass/volume percent in the solutionIn this case, you know:
mass of solute= 22 gvolume of solution= 83 mLReplacing in the definition of mass/volume percent:
[tex]mass/volume percent=\frac{22 g}{83 mL}100[/tex]
Solving:
mass/volume percent= 26.5 %
Finally, the mass/volume percent in this solution is 26.5%.
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I2 is produced by the reaction of 0.4235 mol of CuCl2 according to the following equation: 2CuCl2+4KI⟶2CuI+4KCl+I2. What volume of I2 gas is produced at STP?
Answer: 4.7432 L
Explanation:
Use stoichiometry: .4235 mol CuCl2 (1 mol I2 / 2 mol CuCl2)(22.4 L / 1 mol I2) = 4.7432 L :)
The volume of a gas is 3.0 L, the pressure is 1.0 atm, and the temperature is 300 K. A chemist changes one factor while keeping another constant so that the new volume is 2.0 L. Which of the following could be the new conditions?
Group of answer choices
The final pressure is 0.5 atm, while temperature is kept constant.
The final temperature is 200 K, while pressure remains constant.
The final pressure is 0.2 atm, while temperature is kept constant.
The final temperature is 350 K, while pressure remains constant.
Given the data from the question, the final temperature is 200 K, while pressure remains constant.
Basic conceptsTo obtain the correct answer to the question, we shall consider two conditions:
Case 1 (temperature is constant) Case 2 (pressure is constant) Case 1 (Temperature is constant)We shall determine the new pressure by using the combined gas equation (P₁V₁ / T₁ = P₂V₂ / T₂) as illustrated below:
Initial volume (V₁) = 3 LInitial pressure (P₁) = 1 atmTemperature = constant New Volume (V₂) = 2 L New pressure (P₂) =?P₁V₁ / T₁ = P₂V₂ / T₂
Since temperature is constant, we have:
P₁V₁ = P₂V₂
3 × 1 = P₂ × 2
3 = P₂ × 2
Divide both side by 2
P₂ = 3 / 2
P₂ = 1.5 atm
Case 2 ( pressure is constant)We shall determine the new temperature by using the combined gas equation (P₁V₁ / T₁ = P₂V₂ / T₂) as illustrated below:
Initial volume (V₁) = 3 LInitial pressure (T₁) = 300 KPressure = constant New Volume (V₂) = 2 L New pressure (T₂) =?P₁V₁ / T₁ = P₂V₂ / T₂
Since pressure is constant, we have:
V₁ / T₁ = V₂ / T₂
3 / 300 = 2 / T₂
1 / 100 = 2 / T₂
Cross multiply
T₂ = 100 × 2
T₂ = 200 K
SUMMARY
when the temperature is constant, the new pressure is 1.5 atmWhen the pressure is constant, the new temperature is 200 KFrom the calculations made above, we can conclude that the correct answer is:
The final temperature is 200 K, while pressure remains constant.
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Answer:
b
Explanation:
Question 13 options:
A) What is the volume (L) of 2.5 moles of oxygen at STP?
B) What is the volume (L) of 2.5 moles of nitrogen at STP?
At STP
one mol of oxygen weighs=22.4LNo of moles=2.5mol
Total volume:-
2.5(22.4)56LHow many grams of Cl are in 515 g CaCl2 ? mass:
The explanation is in the picture
A 5.00 L flask at 25˚ C contains 0.200 mol of Cl2 . What is the pressure in the flask?
Answer:
Your answer would be:
0.98atm.
Explanation:
The pressure of a gas can be calculated by using the following expression:
PV = nRT
P = pressure
V = volume
-----------------------------------
n = number of moles
R = gas law constant
T = temperature
P × 5 = 0.2 × 0.0821 × 298
5P = 4.893
P = 4.893 ÷ 5 = 0.98atm
P = 0.98atm
In conclusion, the pressure of a 5.00 L flask at 25 degrees C. that contains 0.200 mol of Cl2 is 0.98atm.
Have a great rest of your day
#TheWizzer
Answer:
Hello, senzawahl SORRY IF I SPELLED YOUR NAME INCORRECT
Prime here ready to solve your question :)
so your correct answer is 0.98atm.
Explanation:
Stay safe
-prime
A 1.0 L solution AgNO3(ag) of and Pb(NO3)2(aq) has a Agconcentration of 0.020 M and a Pb2+ concentration of
0.0010 M. A 0.0010 mol sample of K2SO4(s) is added to the solution. Based on the information in the table above,
which of the following will occur? (Assume that the volume change of the solution is negligible.)
No precipitate will form.
(B) Only Ag2SO4(s) will precipitate.
(C) Only PbSO4(s) will precipitate.
(D) Both Ag2SO4(s) and PbSO4(s) will precipitate.
With an Ag concentration of 0.020 M and a Pb2+ concentration of
0.0010 M, Only PbSO4(s) will precipitate,
Option C is correct
What will precipitate?Generally, the equation for the Chemical Reaction is mathematically given as
Ag2SO4--->2Ag++SO4^{-2}
Where
PbSO4--->Pb2+ +SO4^{-2}
Therefore
Ag2SO4=[0.02^2[0.001]]
Ag2SO4=4*10^{-7}
and
PbSO4=[0.001^2[0.001]]
PbSO4=4*10^{-6}
In conclusion,Since PbSO4>>PAg2SO4, Only PbSO4(s) will precipitate.
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. Calculate how many times greater the change in phosphorous levels between 1965 and 1975 is than between 2008 and 2014. Show your work.
The number of times phosphorous is greater in not visible in the data
How to calculate the change in Phosphorus levelsThe steps involved for calculating the times the change in phosphorus level are :
First step: Determine the difference between Phosphorus levels in 1965 and 1975
Second step: Determine the difference between Phosphorus levels in 2008 and 2014
Last step: Determine the quotient by dividing first step by second step
Hence can conclude that The number of times phosphorous is greater in not visible in the data.
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Attached below is the missing Image related to your question
state one possible mistake in a simple distillation setup and explain the significance of the mistake.
Answer:
liquid is heated. As the liquid is heated, the molecules within it gain the energy to escape the liquid phase and transition into the gas phase in the form of bubbles.
Explanation:
how would changing the proportions in an alloy change its properties
Answer:
An alloy is a mixture of two or more metals which is produced with a specific proportion between metals. So, if the proportion is changed the physical characteristic would be changed as well. For example, brass musical instruments are made of brass which is a mixture (an alloy) of zinc and copper in a specific proportion. If you change a proportion, you will change the physical characteristic of brass musical instruments, and a sound they produce will be different.
Explanation:
When two or more magnetic fields overlap, the result is always a _____.
A combined magnetic field
B force of repulsion
C change in the location of the poles
D force of attraction
Answer:
A. Combined magnetic field
Answer:
A.combined magnetic field
Explanation:
CARRY ON LEARNING#
Where are the most greenhouse gases generated during the production of electricity?
Answer: city w
Explanation:
cities w,y,z all use renewable energy (sun, water, wind) which offput any greenhouse emmissions,
city w uses coal which produces greenhouse gases when used (burnt).
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Explain ionization suppressants as applied to atomic spectrometry
An ionization suppressor is an alkali metal capable of preventing ionization, which can be used in atomic spectroscopy to determine matter composition.
What is ionization?Ionization refers to the phenomena capable of converting neutral atoms/molecules to electrically charged atoms/ions.
Ionization is a process by which radiation (e.g., alpha, beta, gamma rays) can pass energy to inert matter.
Some examples of ionization suppressors include salts of alkali metals (for example, potassium), which can be used in atomic spectroscopy to determine matter composition.
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Starting with the following equation,
BaCl2(aq) + Na3PO4(aq) → Ba3(PO4)2(S) + NaCl(aq)
Calculate the mass in grams of BaCl2 that will be required to produce 50.5 grams of Ba3(PO4)2.
In the double displacement reaction between BaCl₂ and Na₃PO₄, 52.4 g of BaCl₂ are required to produce 50.5 g of Ba₃(PO₄)₂.
What is stoichiometry?Stoichiometry refers to the relationship between the quantities of reactants and products before, during, and following chemical reactions.
Step 1: Write the unbalanced equation.BaCl₂(aq) + Na₃PO₄(aq) → Ba₃(PO₄)₂(s) + NaCl(aq)
Step 2: Balance the equation.We will use the trial and error method. We will:
Multiply BaCl₂ by 3 to balance Ba atoms.Multiply Na₃PO₄ by 2 to balance P atoms.Multiply NaCl by 6 to get the balanced equation.3 BaCl₂(aq) + 2 Na₃PO₄(aq) → Ba₃(PO₄)₂(s) + 6 NaCl(aq)
Step 3: Calculate the mass of BaCl₂ required to produce 50.5 g of Ba₃(PO₄)₂.The mass ratio of BaCl₂ to Ba₃(PO₄)₂ is 624.69:601.93.
50.5 g Ba₃(PO₄)₂ × 624.69 g BaCl₂/601.93 g Ba₃(PO₄)₂ = 52.4 g BaCl₂
In the double displacement reaction between BaCl₂ and Na₃PO₄, 52.4 g of BaCl₂ are required to produce 50.5 g of Ba₃(PO₄)₂.
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(Squirrels gather and store acorns for the winter, which is an example of a ___________ adaptation.)
A. Mimicry
B. Behavioral
C. Structural
D. Environmental
Answer:
C
Explanation:
Which solution would have the highest concentration of [H+] ions?
O a solution with a pH of 8
O a solution with a pH of 12
O a solution with a pH of 10
a solution with a pH of 6
A compound is 69.9% Fe and 30.1% O. What is the empirical formula?
Answer:
Fe2O3
Explanation:
get the ratio for both Fe and O using relative atomic mass and the percent as the mass
Chem dissociation!
Calculate degree of dissociation of electrolyte, if you know that in the 2 M solution there is 0.2 mol of this electrolyte as ions.
Answer:
C. Strong electrolytes can be expected to 100% dissociate in aqueous solution
Explanation:
Select the correct answer.
Iron oxide reacts with aluminum to give aluminum oxide and iron. What kind of chemical reaction is this?
Answer:
Single-replacement reaction
Explanation:
Single-replacement reactions, aka. single-displacement reactions, involve one element/ion in a compound being replaced by another element/ion. In this case, aluminum is replacing the iron in the compound.
If you need help visualizing, the equation looks like this:
Fe₂O₃ + Al³⁺ --> Al₂O₃ + Fe³⁺
Which is most reactive out of calcium, potassium, and magnesium?
Answer:
As we have already discussed, reactivity of alkali metals tends to increase as you go down the group. Therefore, sodium is less reactive with water than is potassium, likewise with the alkaline metals; calcium is more reactive than magnesium
How much energy is needed to completely boil a 5.05g sample of water?
write an equation to show the effect of heat on the nitrate of silver
Answer:
2AgNO³(l) → 2Ag(s) + O²(g) + 2NO²(g)
Explanation:
I used powers ³,²,²
So change them to be down
why are hydrocarbons insoluble in water
Answer:
Hydrocarbons are insoluble in water because they are non-polar compounds while water is a polar solvent. By principle, like dissolves like. Nonpolar solvents dissolve nonpolar solutes and polar solvents dissolve polar solutes.
Explanation:
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hope it helps
Hydrocarbons are insoluble in water because :-
1)Hydrocarbons are nonpolar whereas water is polar. (like dissolves like).
2) Hydrocarbons and water do not exhibit appropriate solvent-solute interactions. Hydrocarbons only form very weak dispersion forces whereas water produces strong polar hydrogen bonding interactions.
Explanation:
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Determine which reaction has the highest activation energy.
A. Burning charcoal
B. Melting ice
C. Combusting gasoline
D. Reacting metal and acid
Answer:
A.
Explanation: