Homework Help: Chemistry

Posted by Anonymous on Sunday, January 16, 2011 at 1:37am.

Rank the following fertilizers in decreasing order of mass percentage of nitrogen:

NH3
NH4NO3
(NH4)2HPO4
KNO3
(NH4)H2PO4
(NH4)2SO4

Chemistry - Dr Russ, Sunday, January 16, 2011 at 6:25am
You need to work out the mass percentage of N in each. So in each case you need to the molar mass then calculate the % N content from

Total mass of N x100%/(molar mass)
Chemistry - Anonymous, Sunday, January 16, 2011 at 7:17pm
i worked out the mass percentage of N in each and this is what i got
NH3=82.25%
NH4NO3=35%
(NH4)2HPO4=21.4%
KNO3=13.85%
(NH4)H2PO4=12.17%
(NH4)2SO4=11.85%

i put in order and still get it wrong -__-
Total mass of N x100%/(molar mass)
Chemistry - Blaine, Friday, September 9, 2011 at 10:45pm
NH3
NH4NO3
(NH4)2HPO4
(NH4)2SO4
KNO3
(NH4)H2PO4
Chemistry - Anonymous, Sunday, September 9, 2012 at 8:07pm
NH3
NH4NO3
(NH4)2HPO4
(NH4)2SO4
KNO3
(NH4)H2PO4

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