March 30, 2017

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The solubility of CaSO4 is 0.209 g/100 mL of water at 30 degrees celsius. if 0.500 g CaSO4 is stirred overnight at 30 Degrees Celsius with 100.0 mL of water,

a. How many grams of CaSO4 remain undissolved?
b. Calculate the molarity of CaSO44 in solution

  • Chemistry - ,

    Solubility CaSO4 = grams/molar mass = mols in 100 mL.
    Convert mols CaSO4 to g. g = mols x molar mass CaSO4.
    Total grams - grams dissolved = ?

    mols CaSO4 in 100 mL x (1000/100) = mols CaSO4 in 1 L and M = mols/L.

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