How many mole of magnesium phosphate `Mg_(3)(PO_(4))_(2)` will contain `0.25 "mole"` of oxygen atoms?

Options

A. (a)`2.5xx10^(-2)`
B. (b)`0.02`
C. (c )`3.125xx10^(-2)`
D. (d)`1.25xx10^(-2)`

Answer

C

Explanation

`8 "mole" O-=1 "mole" Mg_(3)(PO_(4))_(2)`
`implies 0.25 "mole"implies1/8xx0.25`
`=3.125xx10^(-2)` moles