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1. |
What is the heat of reaction for H₂ + Cl₂ -> 2HCl, if the heat of combustion of H₂ = 2 J, Cl₂ = 10 J, and HCl = 10 J? |
A. | -8 J |
B. | 8 J |
C. | -10 J |
D. | 10 J |
Answer» B. 8 J | |