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Use the enthalpies for the given reactions to compute the standard enthalpy change (ΔH°) for the...

Use the enthalpies for the given reactions to compute the standard enthalpy change (ΔH°) for the reaction: 6 C (s) + 7 H2(g) → C6H14 (l) ΔHrxn = ?

C6H14 (l)+19/2O2 (g)→6CO2(g)+ 7H2O(g). ΔH=–3505.8kJ

C(s) + O2 (g) → CO2(g)   ΔH=–393.5kJ

H2(g) + 1/2 O2(g) → H2O(g).   ΔH = – 242.0 kJ

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