Paragraph 1: First Law and Processes

The First Law of Thermodynamics states that ________ equals the change in internal energy plus the ________ done by the gas. In an isothermal process, $\Delta U$ = ________ because temperature is constant. In an adiabatic process, the quantity that is zero is ________. The work done in an isochoric process is ________ because the volume does not change. The specific heat at constant pressure is always ________ than Cᵥ by the amount ________.

Key: (1) heat absorbed Q, (2) work W, (3) zero, (4) Q, (5) zero, (6) greater, (7) R (Mayer's relation)