?74. **A solution is made up by dissolving 15.0 g Na COs*10 H20 in 100.0 g...
Determine the molality of a solution made by dissolving 0.134 moles of glucose in 471 mL of water. Assume the density of water is 1.00 g/mL. Determine the molality of a solution made by dissolving 28.1 g of CH3OH in 513 g of H20.
An aqueous solution of ethanol is prepared by dissolving 19.00 g of ethanol, C2H5OH, in 100.0 g of water. What is the molality of the ethanol solution? The formula mass of ethanol is 46.07 g/mol, and assume the density of water to be 1.000 g/mL
a solution was prepared by dissolving 27.0 g KOH in 100 g water. A) what is mole fraction of KOH in solution? B) what is mass percent?C) what is the molality? 2. A solution was prepared by dissolving 27.0 g KOH(s)in 100.0 g water. You may use the chart below if you find usefiul to answer questions a) -e) MW (g/mol Mass ()moles 56.1 H20 18.0 Solution (a) What is the mole fraction of KOH in the solution? (5 pts...
Challenging problem:Calculate the density of a solution made by dissolving 15 g KCl into 100.0 ml water. Do not neglect the volume contribution of KCl to the overall solution volume.
A salt solution was made by dissolving 17.32 g of NaCl in 400.0 mL of water. Calculate the molality (NOT molarity) of this solution Hint: Molality (m) = moles of solute / Kg of solvent Use 11Na23 and 17Cl35.5
2. (2 pts) Find pH of solution obtained by dissolving 74 mg of calcium hydroxide in 100.0 mL of water.
A solution is prepared by dissolving 20.2 mLmL of methanol (CH3OH)(CH3OH) in 100.0 mLmL of water at 25 ∘C∘C. The final volume of the solution is 118 mLmL. The densities of methanol and water at this temperature are 0.782 g/mLg/mL and 1.00 g/mLg/mL, respectively. For this solution, calculate each of the following. a. Molarity b. Molality C. Percent by mass d. Mole Fraction
A. Determine the molality of a solution made by dissolving 42.6 g of CH3OH in 716 g of H2O. Answer:_____m CH3OH B. Determine the molality of a solution made by dissolving 0.568 moles of (NH4)2CO3 in 3366 g of H2O. Answer:_____m (NH4)2CO3 C. Determine the molality of a solution made by dissolving 0.519 moles of CH3OH in 746 g of ethanol. Answer:___m CH3OH
What is the molarity of a solution prepared by dissolving 15.0 g NaCl in enough water to make 1.50 L of solution?
Determine the molality of a solution made by dissolving 44.1 g of CH3OH in 737 g of H2O. m CH3OH