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in Chemistry by (75.1k points)
The value of `DeltaH_(O-H)` is `109 kcal mol^(-1)`. Then formation of one mole of water in gaseous state from `H_(2)(g)` and `O_(2)(g)` is acccompained by
A. 218 kcal
B. `-109kcal`
C. `-218kcal`
D. unpredictable

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