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posted by Sheena Friday, February 12, 2010 at 5:12pm.

How many moles of nitrogen do you need to make 78 g of ammonia?

The reaction is N2 + 3H2 = 2 NH3 78 moles of NH3 is 4 moles, since the molecular weight is 17. You need half as many moles of N2 as you make of NH3.

5.20

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