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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 | |