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1. A solution is made by dissolving 25.8 g urea (CH4N2O) a nonelectrolyte, in 275 g water. Calculate the vapor pressure at 25oC (Vapor pressure of water at 25oC is 23.8 torr)
97 torr 23.2 torr 23.8 torr 0.97 torr 24 torr

2. Coagulation is destoyed by:
heating shaking adding an electrolyte A&B A&C

3. 1.00 * 10-3 of compound A was dissolved in enough water to make 1.00 mL of solution. The osmotic pressure of this solution was found to be 1.12 torr at 25oC. Calculate the molar mass.
6.01 * 10-5 g 1.66 * 104 g 1.66 g 6.01 g 5.12 g

4. What is the boiling point of a 4 m solution of BaCl2 in water? (Boiling point elevation constant for water is 0.5oC/m)
102oC 104oC 106oC 94oC 6oC

5. Van't Hoff's factor, i is incoporated into some equations due to
a constant value that adjust for the pressure in the lab some electrolytes break up into ions a correction factor that makes data match up with hypothesis Van't Hoff factor I is a constant that corrects all osmotic equations none of the above

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