Hello Everyone

We have mg3(po4)2

So,

1~o.25mole of Oxygen

Then

8=1/32

Moles of Mg(PO4)2 which contains 0.25 moles o2 is ~1000/32*10=0.03125

Thank you very much.....

Hello Aspirant,

Magnesium phosphate Mg3(PO4)2.

==> 1mole of Mg3(PO4)2 contains 8 moles of oxygen atom.

==>? moles of Mg3(PO4)2 contains 0.25 moles of oxygen atom.

==> ? = (1*0.25)/8

          =0.03125 moles of Mg3(PO4)2.

Hope this will help you. Good Luck.