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Question: please explain all steps a gasoline mixture consists of 10...

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***PLEASE EXPLAIN ALL STEPS****

A gasoline mixture consists of 10 mol% C2H5OH, 25 mol% C6H6, 20 mol% C7H8, 45 mol% C8H18.

The gasoline is burnt with air (21 mol% O2, 79 mol% N2).

The reactions are as follows:

C2H5OH + O2 → CO2 + H2O

C6H6 + O2 → CO2 + H2O

C7H8 + O2 → CO2 + H2O

C8H18 + O2 → CO2 + H2O

The water-free product consists of N2 (83.89 mol%), CO2 (15.62 mol%), C6H6, C7H8, and C8H18 (so all C2H5OH and O2 were consumed). 5.46 mol of CO2 is produced per every mol of gasoline burnt. What are the mol % of C6H6, C7H8, and C8H18. in the water-free product?

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