Mass relationships in chemical reaction.Make a solution

For the combustion of ethane,beginning with 0.27 mole of CH3 CH3.
How many moles of CO2 are obtained when the CH3 CH3 is completely combusted?

1 answer

The balanced chemical equation for the combustion of ethane is:

2CH3CH3 + 7O2 → 4CO2 + 6H2O

This means that for every 2 moles of CH3CH3 combusted, 4 moles of CO2 are produced.

Using this ratio, we can calculate how many moles of CO2 are obtained from 0.27 mole of CH3CH3:

(0.27 mol CH3CH3) x (4 mol CO2 / 2 mol CH3CH3) = 0.54 mol CO2

Therefore, 0.54 moles of CO2 are obtained when 0.27 mole of CH3CH3 is completely combusted.
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