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Question

1 mole of chlorine molecule has a mass of 71 grams? Explain.


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Solution

  • One chlorine molecule(Cl2) contains two moles of the chlorine atom.
  • The unified mass of one chlorine atom is 35.5u. So, the unified mass of one chlorine molecule is 2x35.5u=71u.
  • Gram molecular weight is the mass (in grams) of the substance numerically equal to its molecular weight.
  • Hence, 1 mole of chlorine molecule has a mass of 71grams.

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