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| 1. |
What is the heat of reaction for 2CO + O2 -> 2CO2, if the heat of combustion of CO = 20 J, O2 = 5 J, and CO2 = 25 J? |
| A. | 5 J |
| B. | -5 J |
| C. | 15 J |
| D. | -15 JView answer |
| Answer» D. -15 JView answer | |