Which is the straight-chain alkane with formula C4H10?

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Multiple Choice

Which is the straight-chain alkane with formula C4H10?

Explanation:
Alkanes follow the formula CnH2n+2, so with four carbon atoms you get C4H10. This formula matches two isomers: a straight-chain form (n-butane) and a branched form (2-methylpropane). Since the question specifies the straight-chain alkane, the correct choice is the four-carbon straight chain, known as butane. The other options have fewer carbon atoms and correspond to C1H4, C2H6, and C3H8, respectively, so they don’t match the given formula.

Alkanes follow the formula CnH2n+2, so with four carbon atoms you get C4H10. This formula matches two isomers: a straight-chain form (n-butane) and a branched form (2-methylpropane). Since the question specifies the straight-chain alkane, the correct choice is the four-carbon straight chain, known as butane. The other options have fewer carbon atoms and correspond to C1H4, C2H6, and C3H8, respectively, so they don’t match the given formula.

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