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Calculate the enthalpy change for this reaction, using the following combustion data:
C2H4(g) + 3 O2(g) yields 2CO2(g)+ 2H2O(l)
deltaH= -1401 kj
C2H6(g) + 7/2 O2(g) yields 2CO2(g) + 3H2O(l)
H2(g) + 1/2 O2(g) yields H2O(l)
The solution is given in an attachment with step-by-step equations and a short description regarding Hess' Law.