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. Molality is measured in:
L/moles moles/L moles solute/kg solvent moles solute/ moles solvent + solute g/L
4. HCl reacts with NaOH to form water and NaCl. What volume of 0.500 HCl is required to yield 2.00 g of NaCl?
0.0684 mL 0.0342 mL 68.4 mL 34.2 mL None of these
5. Which of the following substances is hydrophilic?
salt cream soy sauce sugar all of the above
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