Which of the following is true for a nuclear reaction? O Electrons are lost
Electrons are gained
O Identity of element changes
Oldentity of element remains same

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?

Which diagram represents the phase tha occurs after a solid melts?

Write an equation to show action of positive and negative catalyst