2. 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
3. The change in heat associated with the formation of a solution is called:
free energy of solution entropy of solution formation energy enthalpy of solution none of the above
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. A student needs a 0.2 M solution of HCl. What volume of solution can be made using 0.50 g HCl?
0.069 mL 0.014 ml 14 mL 69 mL None of these
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