Yes, isobutane is a good example of a branched-chain hydrocarbon. Isobutane is a hydrocarbon molecule that has a branched chain of four carbon atoms. The carbon atoms are arranged in a tetrahedral shape, with each carbon atom bonded to four other atoms. The four carbon atoms are bonded together by single bonds, and there are three hydrogen atoms bonded to each carbon atom. Isobutane is a colorless, flammable gas at room temperature and pressure. It is a component of natural gas and is also produced by the refining of crude oil. Isobutane is used as a fuel for camping stoves and cigarette lighters. It is also used as a propellant for aerosol cans and as a feedstock for the production of other chemicals.