Answers

  • qais
  • Content Quality
2015-12-21T12:15:04+05:30
number of moles= (given weight)/( molecular weight)
molecular weight of sodium, Na = 23 g
so, number of moles of Na = 7/23 =0.30
if it is nitrogen , N , then molecular weight =14 g
number of moles = 7/14 = 0.5
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