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The enthalpies of combustion of CH(4) an...

The enthalpies of combustion of `CH_(4)` and `C_(2)H_(6)` are -890.3 and -1559.7 k J `mol^(-1)` respectively. Which of the two has greater efficiency of fuel per gram?

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To determine which fuel has greater efficiency per gram, we need to calculate the heat produced per gram for both methane (CH₄) and ethane (C₂H₆) based on their enthalpies of combustion. ### Step-by-Step Solution: 1. **Identify the Enthalpies of Combustion**: - The enthalpy of combustion of CH₄ is -890.3 kJ/mol. - The enthalpy of combustion of C₂H₆ is -1559.7 kJ/mol. ...
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