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1. The freezing point of compound A is -28oC and its Kf is 6.28. A solution of 25 g of compound B in 1000.g of compound A freezes at -12oC. Find the molecular weight of compound B.
22 g 5.02 g 9.81 g 12.6 g 14.4 g

2. 64 g of a nonvolatile nonelectrolye is dissolved in 2705 g H2O.
11 g 22 g 44 g 66 g 5 g

3. Calculate the pressure needed to prevent osmosis when 10.0 g KCl is added to 150 mL of water at 25oC.
20.1 atm 40.1 atm 65.7 atm 80.2 atm 160 atm

4. The scattering of light by particles is called:
chromatography colloidal suspension Tyndall effect separation colloidal suspension

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

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