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Answer to Question #18447 in Physical Chemistry for Diana

Question #18447
A waste heat exchanger is used to absorb the energy from the complete combustion of hydrogen sulfide gas. What volume of water undergoing a temperature change of 64 C is required to absorb all of the energy from the burning of 15 kg of hydrogen sulfide?
Expert's answer
What you're missing is the heat of combustion of H2S. The source below says-519 kJ/mol.
(15 kg H2S) x (1000 g/kg) / (34.0814 g/mol) x (519 kJ/mol) = 228424 kJ
Specific heat of water is 4.19 kJ/kg degC.
(228424 kJ) / (4.19 kJ/kg degC) / (64 degC) = 851.82 kg H2O ≈ 850 L H2O

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