A question in analytical chemistry

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A question in analytical chemistry. 

I performed an EDTA titration. Based on the Calcium carbonate, the EDTA concentration was 5.294*10^-3 mol/L 

find the concentration of Ca2+ and Mg2+ in a sample. 

The sample titrated was 5 mL, the whole sample 100 mL (microwaved digested) and the mean EDTA volume used was 4.88mL.

Can you please show me how to calculate. 

Reference no: EM13886257

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