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NEET levelSingle correct optionDifficulty 1 of 3mc093

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

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

Answer: B

Average molar mass = total mass / total moles = (0.5 x 32 + 1.5 x 28)/2.0 = 58/2 = 29 g/mol.
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