1. A Carnot heat engine takes 2000J of heat from the high temperature reservoir at 227 degrees Celsius, does some work and discards heat into the low temperature reservoir at 77 degrees Celsius. What is the Carnot efficiency? How much work does the engine do and how much heat is discarded?
2. Suppose 1.00kg of water at 100 degrees Celsius is mixed with 1.00kg of water at 0 degrees Celsius. What is the total charge in entropy of the mixture?