Which contains more molecules, 4 g of methane `(CH_(4))` or 4g of oxyen `(O_(2))` ?
(Atomic masses : `C = 12 u, H = 1 , O = 16 u`)

Which contains more molecules, 10 g of sulphur dioxide (SO_(2)) or 10 g of oxygen (O_(2)) ? (Atomic masses : S = 32 u , O = 16 u )

Convert 22 g of carbon dioxide (CO_(2)) into moles. (Atomic masses : C = 12 u, O = 16 u )

What is the mass of 0.5 mole of wate (H_(2)O) . (Atomic masses : H = 1 u, O = 16 u )

What mass of nitrogen, N_(2) , will contain the same number of molecules as 1.8 g of water, H_(2)O ? (Atomic masses : N = 14 u , H = 1 u , O = 16 u )

Calculate the number of molecules in each of the following : 11 g of CO_(2) Given atomic masses : P = 31 u, C = 12 u, O = 16 u

Calculate the molecular mass of ethanoic acid, CH_(3)COOH . (Atomic masses : C = 12 u , H = 1 u , O = 16 u )

Formula unit mass of K_(2) CO_(3) is (Atomic mass of K = 39 u , C = 12 u and O = 16 u)

Calculate the molecular mass of nitric acid, HNO_(3) . (Atomic masses : H = 1 u, N = 14 u , O = 16 u )