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Q. 1: Water contains following impurities in ppm: Ca(HCO3)2 = 75 ppm, Mg(HCO3)2 = 73ppm, CaCl2 = 95 ppm, MgSO4 = 30 ppm, CO2 = 20. Calculate the amount of lime (85%pure) and Soda (95% pure) require for softening of 2,50,000 litres of water using sodiumaluminate as a coagulant at the rate of 16.4 ppm.
1 give an anion that can be added in solution to separatea naaq from agaqb naaq from ca2aq2 write a balanced equation
You are titrating 50.0ml of a 2.64M benzoic acid solution with a 0.445M potassium hydroxide solution.
35.0mL of 0.255 M nitric acid is added to 45.0mL of 0.328 MMg (NO3)2. Explain what is the concentration of nitrate ion in the final solution
Alcohols are less volatile than ethers of the same molecular weight, but the two classes of compounds have approximately the same solubility in water because
Aluminum has a density of 2.70 g per cm3. If a sheet of aluminum foil measuring 20.5 cm in length and 15.2 cm in width has a mass of 1.693 g, what is the thickness of the foil in mm?
Write a balanced hydrolysis equation to show why solutions of aluminum chloride are acidic. (Hint; Al3+(aq) ions can be written Al(H2O)63+(aq).)
Reaction of 1.5 g calcium chloride with 3.4 g of silver nitrate gives 2.7 g of silver chloride. Write the balanced formula and net ionic equations for the reaction. Determine the limiting reagent and the theoretical and percent yields of silver ch..
A chemist dissolves 253 mg of pure perchloric acid in enough water to make up 330 ml of solution. Calculate the pH of the solution.
If the mass of NaCl is 11.69 g. What would be the number of moles of all solutes (including cations and anions)
Calculate the molarity (M) of Ba2+ in a solution prepared by adding 0.200 L of 0.400 M Ba(ClO4)2 and 100 mL of 0.400 M Ba(ClO4)2 . Assume volumes are additive.
The initial temperature is 298k. The diameter of the cylinder is 0.5m. and the piston height is 1m. a. what is the mass of the weights on the cylinder
You have 75.0 g of solute Q dissolved in 300-mL of water. The distribution coefficient between ether and water for solute Q is 8. a) How many extractions using 60-mL of ether each would you need to carry out to extract a total of 70.7 g (total) so..
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