Theromodynamics...

Which of the following is an expression of the disorder or randomness of a system?

The unit of entropy is

An ideal gas is allowed to expand both reversibly and irreversibly in an isolated system. If T_i is the initial temperature and T_f is the final temperature, which of the following statements is correct?

At absolute zero temperature, the entropy of every perfectly crystalline substance becomes zero. Which law is this?

When the door of a refrigerator is closed, the cooling effect inside is due to the

During adiabatic expansion, there is increase in volume without heat flow, in or out. Inside a refrigerator, due to the isolated system, the adiabatic expansion of refrigerator gases like freon takes place by using the heat from the gas itself. This causes lowering of temperature of the gas, i.e. cooling effect of the refrigerator.

A piston filled with 0.04 mol of an ideal gas expands reversibly from 50.0 mL to 375 mL at a constant temperature of 37.0°C. As it does so, it absorbs 208 J of heat. The values of q and w for the process will be (R = 8.314 J/mol K) (log 7.5 = 2.01)

The first law of thermodynamics is nothing but the law of conservation of ________.

One mole of a non-ideal gas undergoes a change of state (1.0 atm, 1.5 L, 195 K) to (2.0 atm, 3.0 L, 345 K) with a change in internal energy, ΔU = 20 L atm. The change in enthalpy (ΔH) of the process is