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The active ingredient in a zinc nutritional supplement is ZnSO4·7H2O (molar mass = 287.58 g/mol). Ten...

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Chemistry

The active ingredient in a zinc nutritional supplement isZnSO4·7H2O (molar mass = 287.58 g/mol). Ten zinc tablets containinga mix of the active ingredient and an inactive filler were groundand mixed together thoroughly. The total mass of these ten tabletswas 10.165 g. A 1.830 g sample of the finely ground tablets wasdissolved in an acidic solution. The solution was neutralized withammonia and subsequently warmed in a water bath. Addition of(NH4)3PO4 to the solution resulted in the precipitation ofZnNH4PO4. The precipitate was filtered and dried, then ignited toproduce 0.234 g of Zn2P2O7 (molar mass = 304.76 g/mol). What is themass percent of ZnSO4·7H2O in each tablet?

What is the average mass of the active ingredient ZnSO4·7H2O andinactive filler in each tablet?

Answer & Explanation Solved by verified expert
3.7 Ratings (518 Votes)
Its all about Zinc So focus on Zinc only Moles of Zn2P2O7 massmolar mass 023430476 07678 millmoles each mole of Zn2P2O7 contains 2 Zinc    See Answer
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