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A branded tooth paste contains 0.754 g ...

A branded tooth paste contains `0.754 g` sodium in form of sodium monofluoroortho phosphate `(Na_(3)PO_(4)F)` in `100 mL` solution. Calculate the amount of `Na_(3)PO_(4)F` present in `100 mL` of solution.

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The correct Answer is:
2
`"Mol.wt.of" Na_(3)PO_(4)F=183`
`1 "mole of "Na_(3)PO_(4)Fequiv3"mole" Na=1 "mole" F`
`therefore "Mole of" Na=(0.754)/(23)=0.033`
`therefore "Mole of" Na_(3)PO_(4)F=(0.033)/(3)=0.011`
`therefore` Amount of `Na_(3)PO_(4)F=0.011xx183=2.0g`
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