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1. |
Heat of formations of A, B, C, and D, are 5 J, 10 J, 15 J, and 20 J respectively, what is the heat of reaction A + 4B -> 3C + D? |
A. | t10 J |
B. | t20 J |
C. | t35 J |
D. | t45 J |
Answer» C. t35 J | |