Question

how do I find what the molecular mass of ammonium phosphate is?

Answer 1

First what is ammonium phosphate?
(NH4)3 PO4.
Then look at a periodic table and look for the mass of N? it is the little number below the N on the table.
14
then mass of H.
1.01. here is where it gets interesting. There are 4 hydrogens so we multiply 1.01x4
now there is a bracket around NH4. as a subscript there is a 3 so we multiply NH4 by 3.
((1.01*4)+14)x3=54.12
then just mass P.
30.97+
mass O
16x4
so 54.12+30.97+(16x4)=149.09.
Also to check your work you can look it up online. My number is spot on. http://en.wikipedia.org/wiki/Ammonium_phosphate

Answer 2

Oh and that is g/mol that is important.

Answer 3

Thank you!