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The enthalpies of combustion of monoclin...

The enthalpies of combustion of monoclinic sulphur and rhombic sulphur are -71030 and - 70960 cal respectively. The enthalpy change of the transition of monoclinic sulphur to rhombic sulphur is

A

`-70` cal `mol ^(-1)`

B

`+ 70` cal `mol ^(-1)`

C

140 cal `mol ^(-1)`

D

`-140` cal `mol ^(-1)`

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