When 0.50 kg of ice freezes, the change in entropy is:
In an isochoric process, the internal energy of a system decreases by 50 J. What is the work done?
The work done on an ideal gas system in an isothermal process is -400 J. What is the change in internal energy?
A refrigerator removes heat from the freezing compartment at the rate of 20 kJ and ejects 24 kJ into a room per cycle. How much work is required in each cycle?
A fixed mass of an ideal gas slowly releases 1500 J of heat and as a result contracts slowly, at a constant pressure of 2.0 x 10⁴ Pa, from a volume of 0.050 m³ to 0.025 m³ . What is the effect on the internal energy of the gas?
