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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

Empirical formula is `CH_(3)`
Calculation of molecular formula Empirical
`"formula mașs" = 12 xx 1 + 1 xx 3 = 15`
`n= ("Molecular mass")/("Emperical formula mass")= (30)/(15)= 2`
`"Molecular formula" = "Empirical formula" xx 2= CH_(3) xx 2= C_(2)H_(6)`
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