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Diborane [B(2)H(6)(g)] is used as a very...

Diborane `[B_(2)H_(6)(g)]` is used as a very effective fuel for rockets. Calculate the heat of combustion of diborane for the following reaction:
`B_(2)H_(6)(g)+3O_(2)(g)toB_(2)O_(3)(g)+3H_(2)O(g)`
Given: (1) `2B(s)+(3)/(2)O_(2)(g)toB_(2)O_(3) (s),DeltaH^(0)=-1273kJ*mol^(-1)`
(2) `H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(l),DeltaH^(0)=-285.8kJ*mol^(-1)`.
(3) `H_(2)O(l)toH_(2)O(g),DeltaH^(0)=+44kJ*mol^(-1)`
(4) `2B(s)+3H_(2)(g) to B_(2)H_(6)(g),DeltaH^(0)=+36kJ*mol^(-1)`.

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