(Answered) High phosophate levels in water systems may contribute to

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High phosophate levels in water systems may contribute to several environmental problems. One method to gather data for his determination would be to perform a gravimetric analysis to determine the level of phosphorus (P) in an aqueous sample by converting it to P₂O₇. A 25.00 gram sample of unknown water was acidified, properly treated with a precipitating agent and, when heated, showed the sample to contain 6.06% P. How many grams of P₂O₇ would have to be precipitated for this result?

P = 30.9738 g/mol; P₂O₇ = 173.94 g/mol.

4.028 g
4.157 g
4.254 g
4.356 g
4.497 g

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