Question

A sample of ammonium phosphate, $(NH_4)3PO_4$, contains 3.18 moles of hydrogen atoms. The number of moles of oxygen atoms in the sample is

• A. 0.265
• B. 0.795
• C. 1.06
• D. 3.18

Answer 1

Answer: (C)

1.06

Answer 2

In one mole of $(NH_{4})_{3}PO_{4}$, $12$ moles of hydrogen atoms $4$ moles of oxygen atoms, $3$ moles of nitrogen atoms and $1$ mole of phosphorus atoms are present If $3.18$ mole of hydrogen atom are there, number of moles of oxygen atoms $=\frac{3.18}{3} mL$ $=1.06$ mol