sample of 0.0500 M barium nitrate solution and 0.0500 M sodium sulfate solution was labeled with radioactive .  The radioactivity of the initial sodium sulfate solution was 1.22 x106counts per second.  After the formation of the precipitate and purification by filtration the remaining radioactivity in solution was 250 counts per second.  Calculate the Ksp for the following dissociation: BaSO4(s) ↔ Ba+2(aq) + SO4-2(aq) Group of answer choices 1.05x10-10

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