Question

A sample of ammonium phosphate (nh4)3po4 contains 6 moles hydrogen atoms . the number of moles of oxygen atom in the sample is

Answer 1

1 mole of ammonium phosphate contains 12 moles of hydrogen atoms.

since it is given that only 6 moles of hydrogen atoms are present, so the sample of ammonium phosphate taken is actually 1/2 mole

1 mole of ammonium phosphate contains 4 moles of oxygen,
hence 1/2 mole contains 2 moles of oxygen atoms

Answer 2

Answer: 2 moles

Explanation:

We know that the hydrogen atom is 12 and oxygen atom is 4 in this sample

This tells us that the no. Of hydrogen atom is 3 times the no. Of oxygen atom

So, no. Of oxygen atom is 6/3 moles, i.e, 2 moles