1. A sample of propane(C3H8) is placed in a closed vessel together with an amount of O2 that is 2.50 times the amount needed to completely oxidize the propane of CO2 and H2O at constant temperature. Calculate the mole fraction of each component in resulting mixture after oxidation assuming that H2O is present as a gas.

2. A hiker caught in a thunderstorm loses heat when her clothing becomes wet. She is packing emergency rations which if completely metabolized will release 30 kJ of heat per gram of rations consumed. How much rations must the hiker consume to avoid a reduction in body temperature of 4K as a result of heat loss? Assume the heat capacity of the body equals that of water and that the hiker weighs 55kg.