Anyone know about chemistry?

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; in the space below, calculate the percentage yield for this reaction. Express your answer as a percentage, but do not enter the percent symbol, commas or exponential notation in the blank.