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A hydrocarbon contains $86 \%$ carbon, $488 \mathrm{ml}$ of the hydrocarbon weight $1.68 \mathrm{~g}$ at STP. Then the hydrocarbon is an
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The correct answer is:
Alkene
\(\begin{array}{lllll}
\text{Element} & \text{Wt.} & \text{Mole} & \text{Ratio} & \text{Empirical formula} \\
C=86 \% & 12 & 7.1 & 1 & C H_2 \\
H=14 \% & 1 & 14 & 2 & \text { Belongs to alkene } \mathrm{C}_n \mathrm{H}_{2 n}
\end{array}\)
\text{Element} & \text{Wt.} & \text{Mole} & \text{Ratio} & \text{Empirical formula} \\
C=86 \% & 12 & 7.1 & 1 & C H_2 \\
H=14 \% & 1 & 14 & 2 & \text { Belongs to alkene } \mathrm{C}_n \mathrm{H}_{2 n}
\end{array}\)
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