A man standing in front of a house built on top of a rock 70m away from the rock observes the angle of elevation of the top amd foot of the houses to be 63° and 60° respectively. find the height of the house​

A5 mole sample of liquid acetone is converted to a gas at 75.0°c. if 628 j are required to raise the temperature of the liquid to the boiling point, 15.600 kj are required to evaporate the liquid, and 712 j are required to raise the final temperature to 75.0°c, what is the total energy required for the conversion?