Need right now
a engineer is designing a process to cool hot water from a power plant before returning the water to the environment. his plan is to allow the hot water to flow past a pipe containing a solution that is undergoing a chemical reaction. the chemical reaction will be able to remove some of the water's heat through the metal pipe. which of the following reactions could take place inside the cooling pipe to remove heat from the hot water?
a. c + o2 → co2 + heat
b. nh4cl + heat → nh4+ + cl-
c. cacl2 → ca2+ + 2cl- + heat
d. n2 + 3h2 → 2nh3 + heat

Ok so co(g) is not pronoused that. the only clue is that youpronouse it the oppisote way. 

Oxygen= 88ghydrogen= 12g

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