Question #a3d1b

1 Answer
Eidola
Jul 14, 2017

#22.23%#

Explanation:

If you mean the mass percent, the equation for finding it is

#mass % =# [ (mass of element) #/# (mass of substance) ] #*100%#

The total mass of #HNO_3# is #~~63.02 g/(mol)#. The mass of nitrogen is about #14.01 g/(mol)#.

#14.01/63.02 * 100% = 22.23%# N by Mass

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