find the percent error in a measurement of the boiling point of bromine if in the laboratory figure is 40.6°C and the accepted value is 59.35°C.

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 .

i think it's c. i'm not sure but i think so.

the answer is minerals.