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Cu Lab Summary Prepare 10.0 mL of diluted CuSO4 solutions with the concentrations for trials 1-4. Transfer 35 mL of 0.040 M CuSO4 solution to a 100 mL beaker and label 15×150 mm test tubes with numbers 1-4 for each of the trials. Use a plastic pipet to add either 0.040 M CuSO4 solution or H2O to a.