A 50.0 mL solution of Ca(OH)₂ with an unknown concentration was titrated with 0.340 M HNO₃. To reach the endpoint, a total of 28.4 mL of HNO₃ was required. what was the concentration of the inital Ca(OH)₂ solution

 Time remaining: 00 :09 :37 Chemistry Please show steps and formula: 6a. How grams of Sodium Bicarbonate are required to make 100.0 mL of solution that is 1.00 M? 6b. How many Carbon atoms are present in the solution in a? 7. What is the concentration of a 10.0 mL solution containing 2.43x1022 sodium cations. 8. A solution is 0.254 M Cl- (aq). If the chlorine anions came from the addition of magnesium chloride, what is the concentration of MgCl2 in the solution? 9. How many grams of silver chromate will precipitate when 150. mL of 0.500 M silver nitrate are added to 100. mL of 0.400 M potassium chromate? 10. How many mL of 0.280 M barium nitrate are required to precipitate as barium sulfate all the sulfate ions from 25.0 mL of 0.350 M aluminum sulfate? 11. 25.0 mL of 0.350 M NaOH are added to 45.0 mL of 0.125 M copper (II) sulfate. How many grams of copper (II) hydroxide will precipitate? 12. What volume of 0.415 M silver nitrate will be required to precipitate as silver…

A solution containing sodium fluoride is mixed with a solution containing cadmium nitrate to form a solution that is 0.0050 M in NaF and O.00250 M in Cd(NO3)2. If the Ksp for CDF2 is 6.44x10-3, then Q > K and a precipitate of CDF2 will form. O Q < K and more CDF2 will precipitate since the solution is not supersaturated. O Q < K and CdF2 does not precipitate. Q = K and the system is at equilibrium.

An inlet water solution of 800kg/h containing 12.0 wt % acetone is extracted with the solvent trichloroethane containing 0.5 wt % acetone in a countercurrent tray tower at 250C. The trichloroethane is essentially immiscible with water up to a concentration of acetone in water of 27 wt %. The exit concentration in the water stream is set at 1.0 wt % acetone. The equilibrium data is tabulated in Table 1. Table 1: The equilibrium data 0.0196 0.0467 0.0741 0.0909 0.0120 0.0294 0.0462 0.0571 0.0833 0.1081 0.1316 0.1304 0.1666 0.2000 a) Determine the minimum solvent rate needed for this extraction. b) Using 1.5 time the minimum rate, graphically determine the number of theoretical steps needed in the process. c) Calculate theoretical step using analytical equation d) For a packed tower with this sytem, the height of the transfer unit HoL has been estimated as 0.9m. calculate the number of transfer units NoL and the tower height in this process.