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What is the molecular formula of butane?

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structures of common hydrocarbon compounds — hydrocarbon Structures assumed by hydrogen (H) and carbon (C) molecules in four common hydrocarbon compounds.

The molecular formula for butane is $C_{4} H_{10}$ .12

Butane belongs to the series of paraffinic hydrocarbons known as alkanes, which follow the general molecular formula $C_{n} H_{2 n + 2}$ . Because butane contains four carbon atoms, the formula is calculated as $C_{4} H_{2 (4) + 2}$ , resulting in $C_{4} H_{10}$ .12

There are two isomers that share this molecular formula: n-butane, which features a straight chain of carbon atoms, and isobutane, which has a branched chain.12