Friday, August 12, 2011

Plzzzzzzzzzzzzzzzzzzzzz some one HELP ME!! MAJOR MAJOR CHEM HELP?

A solution of copper (II) nitrate (187.57 g/mol) is prepared by dissolving 46.89 grams of copper (II) nitrate in a total volume of 0.500 L of water. A 25.0 mL sample of this solution is reacted with sodium hydroxide to give a precipitate of copper (II) hydroxide (97.56 g/mol). The copper (II) hydroxide is collected, dried and weighed. You collect 1.05 grams of copper (II) hydroxide;calculate the percentage yield for this reaction.

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