The molecular weight of Ammonium phosphate [(NH₄)₃PO₄] is 149.087581998.

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Ammonium phosphate [(NH₄)₃PO₄] is an inorganic compound of four elements: Nitrogen, Phosphorus, Hydrogen, and Oxygen. The molecular weight of Ammonium phosphate is 149.087581998 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of Nitrogen, Phosphorus, Hydrogen,  and Oxygen.

CALCULATION PROCEDURE: Ammonium phosphate [(NH₄)₃PO₄] Molecular Weight Calculation

Step 1: Find the chemical formula and determine constituent atoms and their number in an Ammonium phosphate molecule.
You will know different atoms and their number in an Ammonium phosphate molecule from the chemical formula. The chemical formula of Ammonium phosphate is [(NH₄)₃PO₄]. From the chemical formula of Ammonium phosphate, you can find that one molecule of Ammonium phosphate has two Nitrogen (N) atoms, eight Hydrogen (H) atoms, one Phosphorus (P) atom, and four Oxygen (O) atoms.

Step 2: Find out the atomic weights of each atom (from the periodic table).

Atomic weight of Nitrogen (N): 14.00674 (Ref: Jlab-ele007)
Atomic weight of Hydrogen (H): 1.008 (Ref: Lanl-1)
Atomic weight of Oxygen (O): 15.9994 (Ref: Jlab-ele008)
Atomic weight of Phosphorus (P): 30.973761998 (Ref: Jlab-ele015)

Step 3: Calculate the total weight of each atom in an Ammonium phosphate molecule by multiplying its atomic weight by its number.

Number of Nitrogen atoms in Ammonium phosphate: 2
Atomic weight of Nitrogen (N): 14.00674
Total weight of Nitrogen atoms in Ammonium phosphate: 14.00674 x 2 = 42.02022

Number of Hydrogen atoms in Ammonium phosphate: 8
Atomic weight of Hydrogen (H): 1.008
Total weight of Hydrogen atoms in Ammonium phosphate: 1.008 x 8 = 12.096

Number of Phosphorus atoms in Ammonium phosphate: 1
Atomic weight of Phosphorus (P): 30.973761998
Total weight of Phosphorus atoms in Ammonium phosphate: 30.973761998 x 1 = 30.973761998

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Number of Oxygen atoms in Ammonium phosphate: 4
Atomic weight of Oxygen (O): 15.9994
Total weight of Oxygen atoms in Ammonium phosphate: 15.9994 x 4 = 63.9976

Step 4: Calculate the molecular weight of Ammonium phosphate by adding up the total weight of all atoms.

Molecular weight of Ammonium phosphate: 42.02022 (Nitrogen) + 12.096 (Hydrogen) + 30.973761998 (Phosphorus) + 63.9976 (Oxygen)  = 149.087581998

So the molecular weight of Ammonium phosphate is 149.087581998.

Ammonium phosphate [(NH₄)₃PO₄] Molecular Weight Calculation

REFERENCES:

• Lanl-1: https://periodic.lanl.gov/1.shtml 
  
• Jlab-ele008: https://education.jlab.org/itselemental/ele008.html
• Jlab-ele007: https://education.jlab.org/itselemental/ele007.html
• Jlab-ele015: https://education.jlab.org/itselemental/ele015.html

See also:

• Apiose (C5H10O5) Molecular Weight Calculation

   

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