1) A steel tank is completely filled with 3.00 m3 of ethanol when both the tank and the ethanol are at a temperature of 31.5?C . When the tank and its contents have cooled to 15.5?C , what additional volume of ethanol can be put into the tank?

2) An aluminum tea kettle with mass 1.50kg and containing 1.70kg of water is placed on a stove If no heat is lost to the surroundings, how much heat must be added to raise the temperature from 20.0?C to 81.0?C ?