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antoniya [11.8K]
4 years ago
8

Isopropyl alcohol, (CH3)2CHOH, is a common solvent. Determine the percent by mass of hydrogen in isopropyl alcohol. A) 6.71% H B

) 13.4% H C) 25.0% H D) 53.3% H
Chemistry
1 answer:
vladimir2022 [97]4 years ago
4 0

Answer:

B) 13.4 %.

Explanation:

  • Isopropyl alcohol has the general molecular formula <em>C₃H₈O.</em>
  • Its molar mass = 60.1 g/mol.
  • <em>The percent by mass of H = [(no, of H atoms x molar mass of H) / (molar mass of isopropyl alcohol)] x 100 </em>= [(8.0 atoms x 1.0 g/mol) / (60.1 g/mol)] x 100  = 13.333 % ≅ 13.4 %.
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