1.

0.02 \quad ( B ) 3.125 \times 10 ^ { - 2 } \quad ( C ) 1.25 \times 10 ^ { - 2 } \quad ( D ) 2.5 \times 10 ^ { - 2 }

Answer»

In one mole of Mg3(PO4)2 ,no. of moles of oxygen is = 4*2 = 8

so, 8 → 1=> 1 → 1/8 moles of Mg3(PO4)2=> 0.25 → 1/8*(0.25) = 1/32 moles of Mg3(PO4)2 = 0.03125 moles

option option B


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