at Compound Water Carbon dioxide given in table, Formulae of some compounds witte te fton Component elements Number of atoms Formula Hydrogen 2. H,0 Oxygen 1 Carbon 1 COM Oxygen 2. Calcium 1 Cao Oxygen 1 Magnesium 1 MgO Oxygen 1 Zinc 1 Zno Oxygen 1 Calcium oxide Magnesium oxide Zinc oxide 81
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