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Worksheet: Heat Capacities of Gasses

Q1:

When 400 J of heat are slowly added to 10 mol of an ideal monatomic gas, its temperature rises by . What is the work done on the gas?

Q2:

The temperature of an ideal monatomic gas rises by 8.0 K while the volume of the gas remains constant. What is the change in the internal energy per mole of the gas?

Q3:

3.0 mol of a dilute monatomic gas, 0.50 mol of a dilute diatomic gas, and 15 mol of a dilute polyatomic gas are initially at K. The temperature of each gas is increased by when they are heated.

What is the internal energy of the 3.0 mol of dilute monatomic gas after it is heated?

What is the internal energy of the 0.50 mol of dilute diatomic gas after it is heated?

What is the internal energy of the 15 mol of dilute polyatomic gas after it is heated?

Q4:

A helium-filled toy balloon has a gauge pressure of 0.200 atm and a volume of 10.0 L. How much greater is the internal energy of the helium in the balloon than it would be at zero gauge pressure?

The specific heat ratio for helium is 1.667.