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Question 4 (1 point) An indirect EDTA titration was performed on a water sample to determine the sulfate content. First, the analyst measured the hardness of the water by directly titrating a 50 mL aliquot with 0.00515 M EDTA. If it took 14.40 mL of the EDTA solution to reach the endpoint, what is the hardness, or concentration (in M) of metals in the water sample?

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