Question

A sample of ammonium phasphate (NH4)3 PO4
contains 3.18 moles of 'H' atoms. The numer of
moles of 'O' atoms in the sample is
(1) 0.265
(2) 0.795
(3) 1.06
(4) 4.00​

Answer 1

Answer:

(3) 1.06

Explanation:

1mole compound contains 12mole of H atoms.

1mole H atoms is present in 1/12mole of compound.

3.18mole H atom is present in 3.18/12 or 0.265 mole of compound.

1 mole compound contains 4 moles of O atoms.

Hence, .265mole compound will have (.265x4) or 1.06 moles of O atoms.