Question

Calculate the percentage of phosphorus in
ammonium phosphate

Answer 1

Answer:

To do this, multiply the atomic mass of phosphorus by the subscript of phosphorus in the formula. (... P...) 1 atom of “P”. Step 7: Divide the mass of phosphorus by the molar mass of (NH4)3PO4 and multiply by 100% to get percent mass.

Answer 2

Answer:

Explanation:

Find the total mass of all the phosphorus atoms in one mole of the compound.

To do this, multiply the atomic mass of phosphorus by the subscript of phosphorus in

the formula.(...P..) (no subscript, so call it “1”)

Mass of phosphorus = 31.0 g/mol x 1 mol = 31.0 g of phosphorus

Step 5: Divide the mass of phosphorus by the molar mass of Na3PO4 and multiply by 100%

to get percent mass.

Percent mass of phosphorus = 31.0g/164g x 100% = 18.9 % P

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