WhIch uses more energy? Changing ice to water or heating water to boiling

Heating water.

Explanation:

If you want to heat the water, you will have to get something of adequate heating capabilities, but if you want to freeze it, then all you would have to do would be put the area around it to lower than freezing temperature. Sure, it would take longer to freeze this way, but freezing would still take less energy.

the correct name for the n3 ion is azide. azide is a polyatomic anion with a -1 charge and is written as n3 -1. it consists of three nitrogen atoms bonded together. hope i . let me know if you need anything else.