how many atoms of nitrogen are present in a 5.00g sampe of magnesium nitride

Chemistry
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how many atoms of nitrogen are present in a 5.00g sampe of magnesium nitride 

Oct 3rd, 2015

Thank you for the opportunity to help you with your question!

first find the molar mass of the compound

Mg3N2 =100.95g/mol

5.00 g/100.95g/mol=0.495 

moles of N=2 x 0.0495=0.0990 moles

atoms N = 0.0990 x 6.02 x 10^23 =5.96 x 10^22 





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Sep 19th, 2015

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