Q 1177545486.     Calculate enthalpy change for the change `8S(g) → S_(8(g))`; given,

`H_2S_(2(g) )→ 2H_(g) + 2S_(g), ΔH = 239.0` k cal `mol^-1;`

`H_2S_(9(g)) → 2H_(g) + S_(g), ΔH = 175.0` k cal `mol^-1`

A

`498` kcal

B

`512` kcal

C

`–498` kcal

D

`–512` kcal

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