1. How much heat is required to melt 15 grams of ice at 0°C?

Given :

15 gram of ice is kept at 0°C.

To Find :

How much heat is required to melt 15 grams of ice at 0°C.

Solution :

We know, specific heat of Ice, L = 334 J/g.

Heat required to melt m gram of ice to water at 0°C is :

Therefore, heat is required to melt 15 grams of ice at 0°C is 5.01 kJ.

the reaction mixture contains some ammonia, plus a lot of unreacted nitrogen and hydrogen. the mixture is cooled and compressed, causing the ammonia gas to condense into a liquid. the liquefied ammonia is separated and removed. the unreacted nitrogen and hydrogen are then recycled back into the reactor .