(a)
Interpretation: The chemical formula and molecular (formula) mass of ammonium sulfate are to be interpreted.
Concept Introduction: An ionic compound is composed of cation and anion. Here, the cation is positively charged, and the anion carries a negative charge.
The cation and anion can be composed of more than one atom. Such type of ions is called polyatomic ions. The chemical formula of an ionic compound can be interpreted with the help of the criss-cross method.
(b)
Interpretation: The chemical formula and molecular (formula) mass of sodium dihydrogen phosphate are to be interpreted.
Concept Introduction: An ionic compound is composed of cation and anion. Here cation is positively charged, and anion carries a negative charge.
The cation and anion can be composed of more than one atom. Such type of ions is called polyatomic ions. The chemical formula of an ionic compound can be interpreted with the help of the criss-cross method.
(c)
Interpretation: The chemical formula and molecular (formula) mass of potassium bicarbonate are to be interpreted.
Concept Introduction: An ionic compound is composed of cation and anion. Here, the cation is positively charged, and the anion carries a negative charge.
The cation and anion can be composed of more than one atom. Such type of ions is called polyatomic ions. The chemical formula of an ionic compound can be interpreted with the help of the criss-cross method. The molecular mass is the sum of the

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Chapter 2 Solutions
CHEMISTRY MOLECULAR NATURE OF MATTER AND
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- in the scope of ontario SCH4U grade 12 course, please show ALL workarrow_forwardIs the chemical reaction CuCl42-(green) + 4H2O <==> Cu(H2O)42+(blue) + 4Cl- exothermic or endothermic?arrow_forwardIf we react tetraethoxypropane with hydrazine, what is the product obtained (explain its formula). State the reason why the corresponding dialdehyde is not used.arrow_forward
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