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The internal energy change (DeltaU) for ...

The internal energy change `(DeltaU)` for the reaction `CH_(4)(g) + 2O_(2)(g) to CO_(2)(g) + 2H_(2)O(l)` is `-885 kJ mol^(-1)` at 298K. What is `DeltaH` at 398 K?

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`DeltaH = DeltaU + Deltan_(g)RT, Deltan_(g) = 1-3=2`
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