The number of moles in 36 g of water is: (H = 1, O = 16)

State Gay-Lussac's law of combining volumes and Avogadro's law.

Calculate the vapour density of carbon dioxide. (C = 12, O = 16)

Calculate the volume occupied by 0.5 mole of any gas at S.T.P.

Calculate the number of molecules in 8 g of oxygen gas. (O = 16, Avogadro number = 6.022 × 10²³)

Calculate the mass of 2.24 dm³ of carbon dioxide at S.T.P. (C = 12, O = 16)

Calculate the number of atoms in 0.5 mole of sulphur dioxide molecules.