What is 0.000546 in scientific nottion

What energy is it when you flip on a switch on a lamp

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?

Wind and moving water provide energy. chemical mechanical thermal none of the above