What is the name of the region (on the graph) where the temperature remains constant while heat is being absorbed (or released)?

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?

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?

Did the detergents containing enzymes work better at removing stains than those containing no enzyme? why or why not?