2007-01-20 05:59:11 · 5 answers · asked by stardust6547 2 in Science & Mathematics ➔ Chemistry
First, just count the number of atoms for each element.
Nitrogen = 3 ( from 3 x 1)
Hydrogen = 12 ( from 4x3)
Phosphorus = 1
Oxygen = 4
Then check the periodic table for the atomic masses for each element. Multiply the the numbers above
Then you should get a total of 148.97
2007-01-20 06:14:37 · answer #1 · answered by Aldo 5 · 0⤊ 0⤋
Molar Mass Of Nh4 3po4
2016-12-10 03:22:20 · answer #2 · answered by Anonymous · 0⤊ 0⤋
atomic masses found in periodic table
N=14 , H=1, P=31, O=16
so MW = (14+4*1)*3+31+4*16 = 54+31+64 =149
2007-01-20 06:20:14 · answer #3 · answered by maussy 7 · 0⤊ 0⤋
The molar mass of a compound is the mass of 6.02 x 10^23 molecules of the molecule. To find the molecular weight of the compound, add up the individual weights of each of the atoms that make up one molecule.
(NH4)3PO4 contains:
3 Nitrogens, 12 Hydrogens, 1 Phosphorus, 4 Oxygens. Add up the atomic masses of each of these atoms, (3 x atomic weight of N) + (12 x atomic weight of H) + ..., use "grams" as your units, and that's your molar mass of your compound.
2007-01-20 06:09:48 · answer #4 · answered by jogimo2 3 · 0⤊ 1⤋
Add up the Ars of:
3 x N
12 x H
1 x P and
4 x O.
Then call it grams, and you have the molar mass.
2007-01-20 06:09:08 · answer #5 · answered by Gervald F 7 · 0⤊ 0⤋