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OpenStudy (anonymous):
A 840 −mL sample of a saturated aqueous solution of calcium oxalate, CaC2O4, at 95∘C is cooled to 13∘C. How many milligrams of calcium oxalate will precipitate? For CaC2O4, Ksp=1.2×10−8 at 95∘C and 2.7×10−9 at 13∘C. ~I tried doing this and I got 5 milligrams as an answer. That was apparently wrong. Can someone explain to me how to do it?
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