222 g of ice at -11.0°C is put in 499 g of water at 89.0°C. All of the ice melts. What is the final temperature of the water? Answer in units of °C

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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 .