Determine the number of moles of each type of monatomic or polyatomic ion in one mole of the following compounds. for each polyatomic ion, determine the number of moles of each atom present in one mole of the ion.
a. kno3
b. na2so4
c. ca(oh)2
d. (nh4)2so3
e. ca3(po4)2
f. al2(cro4)3

KNO₃ → 1 mol of K⁺ ; 1 mol of nitrate (1 mol of oxygen + 3 mol of nitrogen)

Na₂SO₄ → 2 mol of Na⁺ ; 1 mol of sulfate ( 1 mol of sulfur + 4 mol of oxygen)

Ca(OH)₂ → 1 mol of calcium; 2 moles of hydroxide

(NH₄)₂SO₃ → 2 mol of ammonium; 2 mol of sulfite (1 mol of sulfur + 3 mol of oxygen)

Ca₃(PO₄)₂ → 3 mol of calcium: 2 mol of phosphate (1 mol of phosphorus + 4 mol of oxygen)

Al₂(CrO₄)₃ → 2 mol of aluminum ; 3 mol of cromate (1 mol of Cr + 4 mol of oxygen)

Explanation:

Let's verify all the dissociations:

KNO₃  → K⁺  + NO₃⁻

Na₂SO₄  → 2Na⁺  +  SO₄⁻²

Ca(OH)₂   → Ca²⁺  +  2OH⁻

(NH₄)₂SO₃ → 2NH₄⁺  +  2SO₃⁻²

Ca₃(PO₄)₂   → 3Ca²⁺  +  2PO₄⁻³

Al₂(CrO₄)₃ → 2Al³⁺  +  3CrO₄⁻²

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.