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a) An aqueous solution of sodium fluoride is slowly added to a water sample that contains barium ion (0.0405M) and calcium ion(0.0735M). The Ksp of barium fluoride is 1.0x10^-6. The Ksp of calcium fluoride is 3.9x10^-11. what is the remaining concentration of the first ion to precipitate when the second ion begins to precipitate?

b) Calculate Qsp for calcium fluoride (Ksp=3.9x10^-11) when 195.0 mL of a 0.00780 M solution of Ca(NO3)2 is added to 175.0 mL of a 0.00740 M solution of KF

c)What is the solubility og ZnCO3 at 25 degree celcius in a buffer solution with a pH of 10.04?

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