A.)The density of liquid oxygen at its boiling point is 1.14, and its heat of vaporization is 213. How much energy in joules would be absorbed by 2.0 of liquid oxygen as it vaporized?
Express your answer numerically in joules.
B.)Water's heat of fusion is 80., and its specific heat is 1.0.Some velomobile seats have been designed to hold ice packs inside their cushions. If you started a ride with ice packs that held 1900 of frozen water at 0,and the temperature of the water at the end of the ride was 32, how many calories of heat energy were absorbed?
Express your answer numerically in calories using two significant figures.