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After a precipitation reaction with 0.67M H2SO4 was completed, you centrifuge the sample, dry and weigh it. The ppt is found to weigh 0.146 grams.

After a precipitation reaction with 0.67M H2SO4 was completed, you centrifuge the sample, dry and weigh it. The ppt is found to weigh 0.146 grams. Based on this mass, what was the original concentration of the unknown Pb(NO3)2 solution in mol/L? Answer to 3 sf. [Pb(NO3)2] =

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