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What is the simplest formula of the comp...

What is the simplest formula of the compound which has the following percentage composition - Carbon 80%. Hydrogen 20% ? If the molecular mass is 30, calculate its molecular formula.

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Calculation of empirical formula

`therefore" Empirical formula is "CH_(3)`
Calculation of molecular formula
`"Empirical formula mass "=12xx1+1xx5=15`
`n=("Molecular mass")/("Empirical formula mass")=(30)/(15)=2`
`"Molecular formula "="Empirical formula"xx2`
`=CH_(3)xx2=C_(2)H_(6)`
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