Chemistry, 12.05.2020 22:57 rakanmadi87

Which one of the following changes would cause the pressure of a gas to double assuming temperature was held constant? A) Decreasing the volume of a gas from 4.0 L to 2.0 L while keeping moles the same. B) Increasing the volume of a gas from 2.0 L to 4.0 L while keeping moles the same. C) Doubling the number of moles of gas present while decreasing the volume from 2.0 L to 1.0 L. D) Doubling both the moles of gas and the volume of gas.

Answers: 2

Show answers

Answers

Answer from: itssmookie6540

Statement A is correct. Decreasing the volume of a gas from 4.0 L to 2.0 L while keeping moles the same.

Explanation:

Step 1: Data given

Pressure of a gas is doubled

Temperature stays constant

Step 2:

P1*V1 / n1 = P2*V2/n2

⇒with P1 = the initial pressure = 1.0 atm

⇒with V1 = the initial volume

⇒with n1 = the initial number of moles gas

⇒with P2 = the final pressure = 2.0 atm

⇒with V2 = the final volume

⇒with n2 = the final number of moles

Decreasing the volume of a gas from 4.0 L to 2.0 L while keeping moles the same.

Suppose the initial number of moles = 2.0 moles

1.0 * 4.0 / 2.0 = 2.0 *2.0 / n2

The final number of moles n2 = 2.0 moles = the same

This statement is true

Increasing the volume of a gas from 2.0 L to 4.0 L while keeping moles the same.

Suppose the initial number of moles = 2.0 moles

1.0 * 2.0 / 2.0 = 2.0 *4.0 / n2

The final number of moles n2 = 8.0 moles = not the same

This statement is false

C) Doubling the number of moles of gas present while decreasing the volume from 2.0 L to 1.0

Suppose the initial number of moles = 2.0 moles

1.0 * 2.0 / 2.0 = 2.0 *1.0 / n2

The final number of moles n2 = 2.0 moles = the same

This statement is false

D) Doubling both the moles of gas and the volume of gas.

Suppose the initial number of moles = 2.0 moles

The initial volume = 1.0 L

1.0 * 1.0 / 2.0 = 2.0 *2.0 / n2

The final number of moles n2 = 8.0 moles = not the same

This statement is false

Statement A is correct. Decreasing the volume of a gas from 4.0 L to 2.0 L while keeping moles the same.

Answer from: Quest

answer: lol

explanation:

lol

Answer from: Quest

Mass is the amount of matter in an object. weight is the measurement of the pull of gravity on an object. say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165) now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon. however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant. in conclusion it is possible for your weight to change as your mass remains constant.

Another question on Chemistry

Chemistry, 22.06.2019 02:30

Which piece of equipment would me most useful for measuring the volume of some water? a. pan balance b. graduated cylinder c. tweezers d. flask quick

Answers: 2

Answer

Chemistry, 22.06.2019 09:30

What is the mass of 0.46 mil of mgcl2

Answers: 2

Answer

Chemistry, 22.06.2019 12:30

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

Answers: 1

Answer

Chemistry, 22.06.2019 14:30

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4al(s)+3o2(g)→2al2o3(s) a) 1 molal, 1 mol o2 b) 4 molal, 2.6 mol o2 c) 16 molal, 13 mol o2 d) 7.4 molal, 6.5 mol o2

Answers: 3

Answer

You know the right answer?

Which one of the following changes would cause the pressure of a gas to double assuming temperature...

Questions