Write the chemical formulae of following compounds, using crisscross method. (i) Calcium hydroxide (ii) Ammonium sulphate (iii) Sodium carbonate
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Answer:
Ca(OH)2,AL2SO4,NA2CO3
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Answer: CaOH2 , (NH4)2SO4 , Na2CO3
Explanation:Ca Valency 2+ calcium hydroxide OH Valency 1- on cross multiply CaOH2 . Ammonium NH4 Valency 1+ sulphate SO4 valency 2- on cross multiply (NH4)2SO4 . Sodium Na Valency 1+ Carbonate CO3 Valency 2- on cross multiply Na2CO3
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