The calcium in a 250.00 mL sample of natural water was determined by precipitating the cation as CaC2O4. The precipitat

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answerhappygod
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The calcium in a 250.00 mL sample of natural water was determined by precipitating the cation as CaC2O4. The precipitat

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The calcium in a 250.00 mL sample of natural water was
determined by precipitating the cation as CaC2O4. The
precipitate was filtered, washed and ignited in a crucible with an
empty mass of 21.4576 g. The mass of the crucible plus CaO
was 21.6013g. Calculate the concentration of Ca in water in
units of grams per 100 mL of the water.
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