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When MgO reacts with H(2)O at 25^(@)C an...

When `MgO` reacts with `H_(2)O` at `25^(@)C` and 1 atm, the volume change is `-4.6mL. mol^(-1).`
`MgO(s)+H_(2)O(l)toMg(OH)_(2)(s)`
What is the value of `deltaH- deltaE` for this reaction?

A

`-4.7xx10^(-1)J.mol^(-1)`

B

`-4.7xx10^(-2)J.mol^(-1)`

C

`4.7xx10^(-2)J.mol^(-1)`

D

`4.7xx10^(-1)J.mol^(-1)`

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The correct Answer is:
A
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