A small amount of the radioactive isotope pb-212 was mixed, Chemistry

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A small amount of the radioactive isotope pb-212 was mixed

A small amount of the radioactive isotope Pb-212 was mixed with a small quantity of a non-radioactive lead salt containing 0.0100 g lead (Ar = 207). The whole sample was dissolved in aqueous solution and lead (II) chromate (PbCrO4) was precipitated by the addition of a soluble salt. Evaporation of 10 cm^3 of the supernatant liquid gave a residue having a radioactivity of 4.17 X 10^-5 that of the original quantity of Pb-212. Calculate the solubility of lead (II) chromate in mol dm^-3.

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Chemistry: A small amount of the radioactive isotope pb-212 was mixed

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