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1. |
What is the heat of reaction for CH4 + 2O2 -> CO2 + 2H2O, if heat of formation of CH4, O2, CO2 and H2O are 10 J, 5 J, 6 J, and 12 J respectively? |
A. | -10 J |
B. | 10 J |
C. | -20 J |
D. | 20 J |
Answer» C. -20 J | |