Question

How many moles of MgPo4by 2 will contain 0.25moles of oxygen?​

Answer 1

Answer:

1 mole of Mg3(PO4)2 (molecule) contains 3 moles of Mg atoms, 2 moles of P atoms and 2X4 moles of O atoms.

If you understand this, then its simple unitary method-

1 mole Mg3(PO4)2 contains 8 moles O atoms

Thus x moles will contain - 0.25 moles

x = (0.25 X 1) / 8

= 0.03125 moles.

Might seem a small number, but remember its 0.03125 X (6.022 X 10^22) molecules of magnesium phosphate!

Explanation:

Answer 2

Answer:

1/16

Explanation: In 1 mole of MgPO4 there are 4 moles of Oxygen so in x moles of MgPO4 4x moles of oxygen will be there so if 4x=0.25,  x=.25/4 or 1/16