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JEE Main levelSingle correct optionDifficulty 2 of 3mc095

A mixture contains of () and of (). The average molar mass is

  1. A
  2. B
  3. C
  4. D

Answer: D

Moles: = 0.1, = 0.2; total 0.3 mol. Total mass = 8.8 g. Average molar mass = 8.8/0.3 = 29.33 g/mol.
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