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If the concentration of Pb extracted using HCl would be 50 ug/L, calculate the concentration of...

If the concentration of Pb extracted using HCl would be 50 ug/L, calculate the concentration of Pb that would be extractible in the initial solid. The volume of HCl used was 25 mL and it was the garden sample which was 5.0164 g. Note that the extractible amount of Pb using 1M HCl will be smaller than the total Pb concentration in soil.
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