Why is there a change in the energy of a gas when its volume changes?

Change in heat energy of the object when its temperature is changed:

The internal energy of a system can be changed by

How is the change in internal energy brought about?

When the temperature of 5 mol of a gas is changed from 100^@C to 120^@C keeping the volume constant, the change in internal energy of the gas is 80 J, then find the heat capacity of the gas at constant volume.

What are the ways of changing energy of a closed system?

If DeltaH is the change in enthylpy and DeltaU , the change in internal energy accompanying a gaseous reactant then

Explain on the basis of kinetic theory of gases, how the pressure of the gas changes if its volume is reduced at constant temperature.

Heat absorbed by an object when its temperature changes is object when its temprature changes :_________.

The change in the internal energy of a system for 1 mole of a gas is equal to

If the volume of spherical ball is increasing at the rate of 4pi" cc/s" , then the rate of change of its surface area when the volume is 288 pi cc is