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A student prepares a calibration curve for Cu2+ ions by dissolving 9.66 grams of Cu(NO3)2·3H2O in water to make 1.00 liter of aq. solution. The student runs out of Cu(NO3)2·3H2O and wants to use CuSO4·5H2O instead. In order to obtain the same Cu2+ ion concentration, how many grams of CuSO4·5H2O should she dissolve in water to make 1.00 liter aqueous solution?

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