The chemical formulae of the following compounds sodium oxide,magnesium oxide,zinc oxide,calcium oxide,ferrous oxide, ferric oxide,cupric oxide, calcium carbonate, ferric chloride, sodium carbonate, calcium chloride, potassium hydroxide, sodium hydroxide, magnesium hydroxide, sodium nitrates, potassium nitrates,ferric sulphate, ferrous sulphate, magnesium sulphate, aluminium sulphate,copper sulphate
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1 .2NAO 2.2Mgo 3. 2Zno 4. 2cao 8. caco3 10. Naco3 11. cacl2 12. k(Oh)2 21 . mgSo4 22. Also4 23. cuso4
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