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Molality

Q. Calculate the molality of a solution formed by dissolving 27.8 g of LiI in 500.0 mL of water. A) 0.556m B) 0.415m C) 0.394m D) 0.254m E) 0.241m

Solved • Jul 15, 2019

Molality

Q. 2. A 13.9 g sample of anhydrous potassium sulfate K2SO4 is dissolved in 4.79 L of water. The molar mass of potassium sulfate is 174.3 g/mol. Use the equation given to calculate given to calculate the molality (m) of the solution, in mol/kg. for this situation, assume the density of water is 1.00 g/mL

Solved • Jun 25, 2019

Molality

Q. A student dissolves 13.3 grams of sodium thiosulfate (Na2S2O3) into 0.273 L of water to make a solution of aqueous sodium thiosulfate (Na2S2O3). Determine the molality of the solution. Round your answer to three significant figures. Include the unit in your answer.

Solved • Jun 7, 2019

Molality

Q. A student dissolves 37.9 grams of sodium thiosulfate (Na2S2O3) into 0.679 L of water to make a solution of aqueous sodium thiosulfate (Na2S2O3). Determine the molality of the solution.

Solved • Jun 7, 2019

Molality

Q. An aqueous solution containing 34.4 g of an unknown molecular (non-electrolyte) compound in 144.8 g of water was found to have a freezing point of -1.4 ∘C. Calculate the molar mass of the compound

Solved • Jun 3, 2019

Molality

Q. Caffeine is a stimulant found in tea and coffee. A sample of the substance was dissolved in 45.0 g of chloroform to give a 8.55 x 10^-2 m solution. How many grams of caffeine were in the sample?

Solved • May 29, 2019