Question: the answer should be 313 ppb, just need help finding the steps to get that answer 5. Standara adlivion groph. The figure shows standard additions

the answer should be 313 ppb, just need help finding the steps to get that answer

5. Standara adlivion groph. The figure shows standard additions of Cu2 to acidified tap water measured by an electrochemical method. The standard additions had negligible volume compared with that of the ap water sample, so you can coasider all solutions to have the same volume. The signal is the peak beight (in A ), which you will need to measure relative to the baseline in the figure. Find the concentration of Cu2 in the tap water. Five standard additions of 100ppbCu2+ to tap water.lfrom M

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