(NH4)3PO4 has a molar mass of 149.087 grammes per mole. Utilizing the number of atoms in each element and their atomic weights from the compound’s molecular formula, we can get the solution.
According to the chemical formula (NH4)3PO4, each element has three nitrogen atoms, twelve hydrogen atoms, one phosphorus atom, and four oxygen atoms. According to the periodic table, the atomic masses of nitrogen are 14.0067 grammes per mole, hydrogen is 1.00794, phosphorus is 30.973761 grammes per mole, and oxygen is 15.9994 grammes per mole.
When rounded to the nearest thousandth, the result of multiplying the number of atoms in each element by their individual atomic masses to find the mass of the compound, ammonium phosphate, is [(14.0067 grams/mol x 3) + (1.00794 grams/mol x 12) + (30.973761 grams/mol x 1) + (15.9994 grams/mol x 4)], which is equal to 149.087 grammes per mole.