A 0.8088 g sample of limestone was analyzed for Ca. The calcium was isolated as CaSO4 yielding a precipitate of 0.6740 g. Report the amount of Ca in the sample as % w/w CaO. Molar Mass: Ca-40.08 g/mol; CaSO4-136.14 g/mol; Ca0-56.08 g/mol

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A: Solution -

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Q: 0.250 g sample of impure CaCl2 is titrated with 40.00 mL  0.105 M AgNO3 solution. Calculate the…

A: Given: 1) Mass of impure CaCl2 = 0.25 g 2) Volume of AgNO3 = 40 mL 3) Concentration of AgNO3 = 0.105…

Q: 0.00247

A: Molarity of KMnO4 = 0.0010 M Volume of KMnO4 = 4.94 mL At equivalent point,  Geq. of KMnO4 = Geq. of…

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A: The ratio of mass of solute to the mass of solution multiply by 100 is known as % mass.

Q: 2. A sample of pure sodium chloride (MW = EW = 58.44 ) weighing 0.2286 g is dissolved in water and…

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Q: 27) If the 145 mL of a 0.0078 mol/L solution of CuNO3, was mixed with 195 mL of a 1.48 · 10-1mol/L…

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Q: A solution is prepared by adding 750 mL of 4.0 x 103 M Ce(NO3)3 to 300 mL of 0.02 M KIO3. Will…

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Q: A 0.5g sample of CaCO3  is dissolved in an acidic solution. The calcium is precipitated as…

A: Given  Mass of sample = 0.5 g Mass of dry precipitate = 0.72 g

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Q: The gravimetric factor (GF ) for Ag in precipitated Ag2CrO4 equal:(Atomic (weights, Cr=24;Ag=108…

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