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1. You need to make an aqueous solution of 0.165 M barium acetate for an experiment...

1. You need to make an aqueous solution of 0.165 M barium acetate for an experiment in lab, using a 250 mL volumetric flask. How much solid barium acetate should you add?

_______grams

2. How many milliliters of an aqueous solution of 0.200 M chromium(III) sulfate is needed to obtain 7.17 grams of the salt?

________ mL

3. You wish to prepare 229 grams of 22.8 % Ba(CH3COO)2.

You will need _______ grams of barium acetate and _______ mL of water.

Assume that the density of water is 1.00 g / ml.

4. How many grams of Cr2(SO4)3 are there in 287 grams of an aqueous solution that is 39.0 % by weight Cr2(SO4)3.

_________ g Cr2(SO4)3

5.  An aqueous solution is made by dissolving 20.2 grams of cobalt(II) sulfate in 397 grams of water.

The molality of cobalt(II) sulfate in the solution is _________ m.

6. The vapor pressure of diethyl ether (ether) is 463.57 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that dissolves in diethyl ether is cholesterol.

Calculate the vapor pressure of the solution at 25 °C when 7.871 grams of cholesterol, C27H46O (386.6 g/mol), are dissolved in 242.6 grams of diethyl ether.

diethyl ether = CH3CH2OCH2CH3 = 74.12 g/mol.

VP(solution) = _________ mm Hg

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