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7. Calculate the molality, m, of a solution prepared from 29.22 grams of potassium sulfate in...
Solutions and Dilutions 1. What would be the percent (%) concentration of a solution that results from the combination of 115.0 grams of potassium nitrate with 0.320 L of water? Identify the solute and solvent of the solution 2. A solution is prepared by mixing together 76.40 mL of liquid ethanol (C2H4O) and 110.25 mL of water. Identify the solute and solvent of the resulting solution. What would be the percent (%) concentration of the solution? 3. How many grams...
please dont answer the followin questions as i posted this by accident... thank you calcium nitrate solute? 6. If a solution were made by the combination of 1.172 moles of ammonium carbonate with exactly 800 mL of water, what would be the percent concentration and molarity of the resulting solution? RESET 7. Calculate the molality, n.of a solution prepared from 2922 grams of potassium sulfate in exactly 2000 mL of water. Consider the density of water to be 1.00 g...
1. An aqueous solution is made by dissolving 18.0 grams of aluminum iodide in 389 grams of water. The molality of aluminum iodide in the solution is 2. In the laboratory you are asked to make a 0.406 m barium hydroxide solution using 425 grams of water. How many grams of barium hydroxide should you add? 3. An aqueous solution is 5.50% by mass ammonia, NH3, and has a density of 0.975 g/mL. The molality of ammonia in the solution...
PART A: I) How many grams of CoI2 are there in 225 grams of an aqueous solution that is 21.0 % by weight CoI2. II) An aqueous solution of iron(III) sulfate, Fe2(SO4)3, contains 9.24 grams of iron(III) sulfate and 17.6 grams of water. The percentage by mass of iron(III) sulfate in the solution is %. Part B: I) A solution was made by dissolving 2.39 g sodium chloride () in 27.9 g water (h20). What is the mole fraction of...
1. An aqueous solution of potassium thiosulfate is prepared by dissolving 3.70 g of potassium thiosulfate in 7.11×102 g of water. The density of the solution is 1.37 g mL-1. a) Determine the mass percent of potassium thiosulfate in the solution. b) Determine the mole fraction of potassium thiosulfate in the solution. 2. An aqueous solution of potassium bromide is prepared by dissolving 8.75 g of potassium bromide in 8.29×102 g of water. The density of the solution is 1.20...
Calculate the molality of the resulting solution when 112.7891 grams of potassium dihydrogen phosphate is dissolved in 2.500 liters of pure water.
A) Calculate the molality of a sucrose solution made by dissolving 73.1 grams sucrose into 55.3 grams water. The molar mass of sucrose is 342.2 g/mol. Record your answer in scientific notation using 3 significant figures. Use * for the multiplication symbol. B) A sodium hydroxide solution that contains 55.5 grams of NaOH per L of solution has a density of 1.14 g/mL. Calculate the molality of the NaOH in this solution. Record your answer to 2 decimal spaces. C)...
Calculate the molality of a 20.0% by mass ammonium sulfate (NH4)2SO4 solution. The density of the solution is 1.117 g/mL.
1. Determine the molality of a solution prepared by dissolving 4.95 g of potassium chloride in 70 g of water. Enter your answer to 2 decimal places 2. Determine the molality of a solution of benzene dissolved in toluene (methylbenzene) for which the mole fraction of benzene is 0.132. Give your answer to 2 decimal places. 3. How many moles of solute particles are present in 7.89 mL of 0.458 M K2SO4? When you have your answer, take the LOG...
Calculate the molality of a dextrose (mw = 180.16 g/mole) solution prepared by dissolving 52.8 g dextrose in 500 mL of water (density of the solution is 1.06).