[ankara55t]

Pound for pound, which contains more Nitrogen between liquid ammonia and ammonium nitrate?

[Unknown008]

You have to work out the number of nitrogen atom for each pound of the substance. I'll use grams, since I'm not familiar with pounds.

Liquid ammonia :
Ammonium Nitrate :

Mass of ammonia = 14 + 3 = 17g (for each mol)
Mass of ammonium nitrate = 14 + 4 + 14 + 16 + 16 +16 = 80g (for each mole)

Now for ammonia, you have 1 mole of N per 17g
For ammonium nitrate, you have 2 moles of N per 80 g

In 1 g of ammonia, you have therefore 1/17 = 0.0588 moles of N
In 1 g of ammonium nitrate, you have therefore 2/80 = 0.025 moles of N

You see that in the same mass, you have more nitrogen in ammonia than in ammonium nitrate (0.0588 compared with 0.025).

Hope it helped! :)