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(five marks) Calculate the enthalpy of formation of ethane from the data given below: (i) C(s)+O2(g)CO2(g) (ii) H2(g)+21O2(g)H2O( & ) rH=393.5kJrH=285.8kJ (iii) C2H6(g)+27O2(g)2CO2(g)+3H2O() rH=1560kJ

(five marks) Calculate the enthalpy of formation of ethane from the data given below: (i) C(s)+O2(g)CO2(g) (ii) H2(g)+21O2(g)H2O( \& ) rH=393.5kJrH=285.8kJ (iii) C2H6(g)+27O2(g)2CO2(g)+3H2O() rH=1560kJ

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