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Section Post-Laboratory Questions (use the spaces provided for the answers and additional paper ifnecessary. 1. laboratory the m molar mass of your unknown. Calculate the percent error for the gram molar mass of your unknown. 2. A student, following the procedure described in this module, used water as the solvent and encountered some interesting problems. Comment on the effect, if any, each of the following situ- ations could have had on the experimental results. a) The unknown, a white powder, failed to dissolve in the solvent. (2) The student returned to the laboratory in structor for a different solid unknown. This unknown bubbles were seen escaping from the solution almost immediately after the addition of the (3) As the student was setting up the apparatus to measure the freezing point of the unknown solution, the thermometer assembly rolled off the laboratory bench, and the thermometer broke. The student obtained a new thermometer and performed the experiment as instructed.
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