Decreasing the pressure of an ideal gas at a constant mass and temperature will cause which of the following to increase?

Question

I: The molar mass of the gas

II: The volume of the gas

III: The density of the gas

IV: The average kinetic energy of the gas

 

I and II

 

II only 

 

II and III

 

I and IV

 

I, II, and IV

Answer 1

Volume will increase

Kinetic energy will increase

Density will decrease

Molar mass remains the same

I and IV