a) How much heat transfer is required to raise the temperature of a 0.851-kg aluminum pot containing 3 kg of water from 30.0C to the boiling point and then boil away 0.750 kg of water?

(b) How long does it take if we have a case where we have 2,643,878J is needed with a rate of heat transfer is 500 W 1 watt = 1 joule/second (1 W = 1 J/s) ?