Sawaal
1
Q:

what is the gram formula mass of NH43PO4?

A) 139.54 B) 140.70
C) 149.08 D) 153.24

Answer:   C) 149.08



Explanation:

The gram formula mass is nothing but molar mass.

 

Composition :

 

Symbol      Element       Atomic weight       Atoms
   

     P         Phosphorus       30.973762               1       = 30.973
   

     O         Oxygen             15.9994                  4       =  63.998
   

     N         Nitrogen            14.0067                  3       =  42.020
   

     H         Hydrogen          1.00794                  12      =  12.096

   

Total   =  30.973+63.998+42.020+12.096 = 149.087

Subject: Chemistry
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