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2 Coleutate the formula illmasses of 2nO, Na,O, R,COtoen atomte meases65 ua . 23 11, K 39 I, 12 ,and O10 u |
Answer» Formula unit mass: The formula unit mass of a substance is the sum of the atomic masses of all atoms in a formula unit of a compound. The term ‘formula unit’ is used for those substances which are made up of ions.Formula unit mass of ZnO = Atomic mass of zinc + atomic mass of oxygen= 65 + 16 = 81uFormula unit mass of Na2O = 2X 23 +16 =46 + 16 =62uFormula unit mass of K2CO3= 2X39 + 12 + 2X16 = 78 + 12 + 32 = 122 u boring |
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