# A chemist needs to create a series of standard Cu²+ (aq) solutions for an absorbance experiment....

###### Question:

A chemist needs to create a series of standard Cu²+ (aq) solutions for an absorbance experiment. For the first standard, he uses a pipet to transfer 25.00 mL of a 2.20 M Cu2+ (aq) stock solution to a 250.0 mL volumetric flask, and he adds enough water to dilute to the mark. He then uses a second pipet to transfer 5.00 mL of the second solution to a 50.00 ml. volumetric flask, and he adds enough water to dilute to the mark. Calculate the concentration of the Cu?+ (aq) solution in the 50.00 mL volumetric flask. concentration: concentration:

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