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How many moles of magnesium phosphate, M...

How many moles of magnesium phosphate, `Mg_3(PO_4)_2` will contain 0.25 mole of oxygen atom ?

A

0.02

B

`3.125 xx 10^(-2)`

C

`1.25 xx 10^(-2)`

D

`2.5 xx 10^(-2)`

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The correct Answer is:
B
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