Question

If you drive a car to work, what fraction of the chemical energy of the gasoline ultimately ends up as heat?

Answer 1

All of the chemical energy of the gasoline ends up as heat

Step-by-step explanation:

Gasoline has chemical energy stored in it. When used as a fuel to power a car, the gasoline is combusted to convert the chemical energy stored within into heat energy, and power the car. The heat energy is further converted to mechanical energy, light energy, sound energy, etc.