Which of these would have the lowest kinetic energy?
boiling water
ice water
refrigerated water
water at room temperature

ice water

Explanation: Kinetic energy is the energy possessed by a substance by virtue of its motion and is directly proportional to the temperature of substance.

R= gas constant

T= temperature

Thus boiling water will have a temperature of around , ice water will have a temperature of  , refrigerated water will have a temperature of more than , and water at room temperature will have a temperature more than refrigerated water but less than boiling water.

Thus ice water has lowest temperature and thus will have lowest kinetic energy.

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 .