Thermodynamics — Set 4

What is the SI unit of entropy?

For an ideal gas, internal energy depends primarily on which variable?

In free expansion of an ideal gas into vacuum, what is the change in temperature of the gas?

In an isothermal expansion of an ideal gas, which statement is correct?

Which statement best describes a heat engine?

How is the COP of a heat pump related to the COP of the corresponding refrigerator?

For a reversible adiabatic process of an ideal gas, which relation is also correct?

For a monoatomic ideal gas, what is the value of γ = Cp/Cv?

For a diatomic ideal gas at ordinary temperatures (ignoring vibration), what is the typical value of γ?

Approximately how many joules are equal to 1 calorie?