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Troyanec [42]
2 years ago
8

What is the boiling point (in °C) of a 0.743 m aqueous solution of KCI?

Chemistry
1 answer:
pishuonlain [190]2 years ago
6 0
The correct answer is 100.761
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Convert
Phantasy [73]

Answer:

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

Explanation:

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

  • 31.82 g ÷ 74.093 g/mol = 0.43 mol

-We convert K₂SO₃ moles to grams using its <em>molar mass</em>:

  • 3.2 mol * 158.26 g/mol = 506.4 g

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

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

-At STP, <em>one mol of any gas occupies 22.4 L</em>:

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8 0
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