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1. |
What is the heat of reaction for CH4 + 2O2 -> CO2 + 2H2O, if the heat of combustion of H2O = 5 J, CO2 = 10 J, O2 = 0, and CH4 = 25 J? |
A. | -5 J |
B. | 5 J |
C. | -10 J |
D. | 10 JView answer |
Answer» C. -10 J | |