1. What is the molarity of a solution in which 150g of Ca© are dissolved in 190ml of solution? (MW: Ca = 400/r 2. What is the normality of a solution containing 180g of HCI in 2600ml of solution? (MW: H = 1g/mol, C|=35g/ 3. Find the molality of a solution made by adding 9g of Na0C| to 4000g of water, (MW: Na=23 g/mol CI=35a/mol)

At 20°C, a 2.89 M aqueous solution of ammonium chloride has a density of 1.004 g/mL. What is the molality of ammonium chloride in the solution? The formula weight of NH4Cl is 53.50 g/mol. Express your answer in decimal potation and to 2 decimal places. Do not include units.

What is the boiling point and freezing point of the solutions? Kb=0.512C*Kg Kf=1.186C*hg 1) 58.5 g of sugar (MW=342.297g/mol) dissolved in 500mL of water.  2) 58.5 g of glucose (MW=180.156g/mol) dissolved in 500mL of water.

A solution is made using 84.7 g of toluene (MM = 92.13 g/mol) and 80.0 g of benzene (MM = 78.11 g/mol). What is the molality of the toluene in the solution? Tap here or pull up for additional resources Question 6 of 16 80 « DII FA A 10 1 4 7 +/- 2580 4 F11 3 6 m 9 0 401) F12 C Submit x 100

How many grams of NH3 will dissolve in 0.10 L of solution when its partial pressure is 7.6 torr? (kH = 58 M/atm); gfw (MW) of NH3 is 17.04 g/mol; 760Torr = 1 atm.

Q/ A) Calculate the concentration in molality of a solution prepared by dissolving 2 mol of chloric acid in 800 g of water? B) Calculate the concentration of sodium chloride, NaCl, in molality, if 43 g of it is dissolved in 108 g of water (H2O). (Note that the atomic masses: Na = 23, C1 = 35.5)

Two aqueous solutions of equal volume, one containing 10 g of lactic acid (C3H6O3) and one containing 10 g of glucose (C6H1206) are separated by a semi permeable membrane (allowing only H20 to pass). The net flow of water through the membrane is... ? ? - -H,O H,O 10 g C3H,O3 10 g CH1,06

What is the freezing point of a solution made by dissolving 45.0 g of glucose (C2H12O6) in 500. g of water? The freezing point depression constant, Kf, of water is 1.86 °C/m and the molar mass of glucose is 180.0 g/mol.   ΔTf = Kf m i   a. -0.465°C   b. -0.620°C   c. -1.86°C   d. -0.930°C

Given the following mixture of two compounds 45.00 mL of X (MW =80.00 g/mol)(density 0.893 g/mL) and 885.00 mL of Y (55.00 g/mol))(density 1.280 g/mL). The freezing point of pure Y is 54.00 degrees C. The molal freezing constant is 4.757 degrees C/m. What is the freezing point of the solution.

Rubbing alcohol is a commonly used disinfectant and has a cooling effect when applied to the skin. The active ingredient in rubbing alcohol is isopropanol. In drugstores, the most common concentration of rubbing alcohol sold contains 70% (vol/vol) isopropanol in water.  Assuming the rubbing alcohol manufacturer uses a 100% isopropanol solution, what volume of pure isopropanol is required to produce a 200-mL bottle of rubbing alcohol?  Show all calculations in your answer.