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1. A 0.107 g sample of an unknown diprotic acid is titrated to the equivalence point using 50.0 mL of 0.206 M NaOH. Calculate the molar mass of the acid.
0.00515 g 20.8 g 0.0103 g 36.5 g 147 g

2. 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

3. Which statement is false:
if a nonvolatile solute is added to a solvent, the vapor pressure of the solvent is lowered DHsolution">salts have a low DHsolution the amount of gas dissolved is directly proportional to the pressure of the gas above the solution heating always helps the solute dissolve in the solvent All statements are FALSE

4. 25.00 g of an unknown salt of formula MX3 is dissolved in 2000. g H2O. The freezing point of the solvent is -50.0oC. Find the formula weight.
6.49 g 1.49 g 7.44 g 10.44 g 64.32 g

5. Which of the following substances is hydrophilic?
salt cream soy sauce sugar all of the above

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