J.R. S. answered 03/14/21
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This is a problem involving the "common ion" effect.
PbSO4(s) <==> Pb2+(aq) + SO42-(aq)
Ksp = [Pb2+][SO42-]
Ksp = [0.147][SO42-]
Look up the Ksp for PbSO4 and use that value to solve the above equation for [SO42-]. That will be your answer.