A hydrocarbon contains 80% C. The vapour den | vedclass

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(C) $1$. Calculate the molar mass: $	ext{Molar mass} = 2 	imes 	ext{Vapour density} = 2 	imes 30 = 60 \ g/mol$. $2$. Calculate the mass of carbon:

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$C_4H_{12}$

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(C) $1$. Calculate the molar mass: $	ext{Molar mass} = 2 	imes 	ext{Vapour density} = 2 	imes 30 = 60 \ g/mol$. $2$. Calculate the mass of carbon: $	ext{Mass of } C = 80\% 	ext{ of } 60 = 0.80 	imes 60 = 48 \ g$. $3$. Calculate the number of carbon atoms: $	ext{Number of } C 	ext{ atoms} = 48 / 12 = 4$. $4$. Calculate the mass of hydrogen: $	ext{Mass of } H = 60 - 48 = 12 \ g$. $5$. Calculate the number of hydrogen atoms: $	ext{Number of } H 	ext{ atoms} = 12 / 1 = 12$. $6$. The molecular formula is $C_4H_{12}$.

$A$ hydrocarbon contains $80\% \ C$. The vapour density of the compound is $30$. The molecular formula of the compound is :-

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