A hydrocarbon contains 92.24 % carbon by mass and has a molar mass of 78.12 g mol-1. Determine the empirical formula and mo

A hydrocarbon contains 92.24 % carbon by mass and has a molar
mass of 78.12 g mol-1.

Determine the empirical formula and molecular
formula of the hydrocarbon​

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  1. Explanation:

    so for this one you know 92.24 is the mass of C so to work out the mass of hydrogen u so 100-92.24=7.76

    so

    C : H

    92.24/12 : 7.76 /1

    7.68 : 7.76

    so 7.76÷7.68=1.01

    so CH

    12+1=13

    78.12÷13=6.009

    so CH×6= C6H6

    hope this helps:)

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