A sample question from Yahoo!answers
State whether ΔS is positive, negative, or zero for each of the following processes: (a) 46 g of liquid water goes from 60°C to 50°C at 1 atm pressure. (b) 7 g of N2(g) goes from 50°C and 2.0 atm pressure to 50°C and 1.0 atm pressure. Please give an explanation and the general relationship. Thank you.