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Answer:

  • 0.43 moles Ca(OH)₂
  • 506.4 grams K₂SO₃
  • 1.20 moles HCl
  • 2.080 moles Cl₂

Explanation:

-We convert Ca(OH)₂ grams to moles using its molar mass:

  • 31.82 g ÷ 74.093 g/mol = 0.43 mol

-We convert K₂SO₃ moles to grams using its molar mass:

  • 3.2 mol * 158.26 g/mol = 506.4 g

-One formula unit of HCl is HCl. We convert molecules to moles using Avogadro's number:

  • 7.25x10²³ molecules ÷ 6.023x10²³mol/molecules = 1.20 mol

-At STP, one mol of any gas occupies 22.4 L:

  • 46.6 L * 1 mol / 22.4 L = 2.080 mol

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