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Molar mass of CH₄ = 12 + 4(1) = 16 mass = Mr x moles mass = 16 x 7.23 mass = 115.68g = 116g (3sf)

Diamond is an extremely strong and rigid substance because of its molecular structure, which is giant covalent structure. This means that every carbon is covalently bonded to 4 other carbon molecules to f...

An unsaturated hydrocarbon is a molecule containing only hydrogen and carbon with a carbon carbon double bond in the molecule.

As you go down group 1, the reactivity increases. This is because each element has only one electron in their outer shell, so need to lose this electron in order to react. As you go down group 1, the numb...

Methane is a gas made up of 1 carbon atom for every 4 hydrogen atoms. The central carbon atom forms covalent bonds with these 4 hydrogen atoms (they share an electron each), and this sharing completes the...