In chemistry, many chemical equations require the amount of substance to be expressed in the unit of moles. Given below is the moles of butane to grams formula which helps you to convert from the weight of butane moles to grams. Butane is a hydrocarbon compound and it is classified as a type of alkane. Alkanes are hydrocarbons which consist of carbon atoms bonded to each other. Butane's molecular formula is C₄H₁₀. 1 Moles of Butane = 58.1222 grams.