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21 October, 04:54

A certain hydrocarbon was found to contain only 18g of carbon and 4g of hydrogen in a 22g sample. Determine its Empirical formula

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  1. 21 October, 05:11
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    C₃H₈

    Explanation:

    First, convert mass to moles.

    18g C (1 mol C / 12 g C) = 1.5 mol C

    4g H (1 mol H / 1 g H) = 4 mol H

    Multiply by 2 to get integers:

    3 mol C and 8 mol H

    The empirical formula is C₃H₈.
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