Question

if a gas is expanded at constant temperature
A) the pressure decreases

B) the kinetic energy of the molecules remains the same

C) the kinetic energy of the molecules decreases

D) the number of molecules of the gas increases​

Answer 1

hey ,

⏩pressure is inversely proportional to the volume at constant temperature Hence a) is correct

⏩average kinetic energy of gas is directly proportional to Absolute Temperature and b) is correct

⏩expansion at constant temperature cannot change the number of molecules and D) is correct

Thanks!

Answer 2

Answer:

D is the correct one

hope it helps