The zinc in a 1.343-g sample of a foot powder was
Chapter 4, Problem 4.118(choose chapter or problem)
The zinc in a 1.343-g sample of a foot powder was precipitated as ZnNH4PO4. Strong heating of the precipitate yielded 0.4089 g Zn2P2O7. Calculate the mass percent of zinc in the sample of foot powder.
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