What is a reference point? A. The location of an object after it has been in motion
B. The origin of an XY coordinate grid
C. the location where the direction of motion changes
D. A starting position on which other information is based

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?