2 moles of a mixture of acetylene and et...

2 moles of a mixture of acetylene and ethane produced on combustion, 5500 kJ of heat energy. The enthalpies of combustion of acetylene and ethane are 2000 and 3000 kJ `mol^(-1)` respectively. The ratio of acetylene to ethane in the mixture is

`1:3`

`1:1`

`3:1`

`1:2`

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