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1. A solution contains the same mass of two substances, substance A, which weights 200 g, and substance B, which weights 50 g. What is the mole fraction of substance A in this solution?
1/5 1/4 4/5 5/4 2/3

2. Which of the following would serve as the best electrical conductor (assuming constant molarities)?
HC2H3O2 H2O H2CO3 H2SO4 HF

3. Which of the following are colligative properties?
Boiling Point Elevation Freezing Point Depression Osmotic Pressure Vapor Pressure Law All of the above

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

5. Something dissolves in water to form a 2 m solution. If 2.0 liters contains 200 grams of the substance, then what is the molecular mass of the substance?
25 g/mol 50 g/mol 75 g/mol 100 g/mol 125 g/mol

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