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Course: Physical Chemistry (Essentials) - Class 11 > Unit 3

Lesson 6: Concentration terms
Science
Physical Chemistry (Essentials) - Class 11
Some basic Concepts of Chemistry
Concentration terms
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Concentration terms

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Problem

6.4g of methanol (CHA3OH) is dissolved in 18g water.
Calculate the mole fraction of methanol in the solution.
Given: Molar mass of CHA3OH=32g/mol
Molar mass of HA2O=18g/mol.
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi