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2. Below (a through d) is a list of some errors that could occur during the experiment. For each error, consider the effect on the data that would be obtained and trace the effect through to the calculation of molar mass. Circle whether the calculation will yield a higher or lower value than the actual molar mass. Then explain your reasoning for each case in detail. (Note: assume the sample had a molar mass equal to the result in question 1.) A student removed the sample from the heating bath before the sample liquid had all evaporated. calculation HIGHER than actual LOWER than actual Explanation A student did not dry the outside of the flask after removing it from the water bath to weigh the flask with condensed vapor. calculation HIGHER than actual LOWER than actual Explanation calculation HIGHER than actual LOWER than actual After the heating process, the sample had not yet condensed when the foil caps were switched. Explanation calculation calculation HIGHER than actual LOWER than actual calculation Explanation During the heat operation, the flask was left in the hot water bath very long past the time when it had all evaporated. calculation calculation

2. Below (a through d) is a list of some errors that could occur during the experiment. For each error, consider the effect on the data that would be obtained and trace the effect through to the calculation of molar mass. Circle whether the calculation will yield a higher or lower value than the actual molar mass. Then explain your reasoning for each case in detail. (Note: assume the sample had a molar mass equal to the result in question 1.) A student removed the sample from the heating bath before the sample liquid had all evaporated. calculation HIGHER than actual LOWER than actual Explanation A student did not dry the outside of the flask after removing it from the water bath to weigh the flask with condensed vapor. calculation HIGHER than actual LOWER than actual Explanation calculation HIGHER than actual LOWER than actual After the heating process, the sample had not yet condensed when the foil caps were switched. Explanation calculation calculation HIGHER than actual LOWER than actual calculation Explanation During the heat operation, the flask was left in the hot water bath very long past the time when it had all evaporated. calculation calculation

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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THERE ARE 2 QUESTIONS (see next page for the rest) 1. A student does the same experiment as described in the Lab 1 handout and gets the following data. The mass of the empty flask with the dry foil cap was 55.041 g. The sample was heated in water at 99.5°C then allowed to condense. The flask and condensed vapor weighed 56.039 g. To determine the volume of the flask, it was filled with water giving a total mass of 270.9 g. The barometric pressure in the lab was 752 mm of Hg. Use this data to find the molar mass of the sample unknown. Show all steps and unit conversions involved. Use 0.9982 g/mL for water density. 0 2. Below (a through d) is a list of some errors that could occur during the experiment. For each error, consider the effect on the data that would be obtained and trace the effect through to the calculation of molar mass. Circle whether the calculation will yield a higher or lower value than the actual molar mass. Then explain your reasoning for each case in detail. (Note: assume the sample had a molar mass equal to the result in question 1.) A student removed the sample from the heating bath before the sample liquid had all evaporated. calculation HIGHER than actual LOWER than actual Explanation A student did not dry the outside of the flask after removing it from the water bath to weigh the flask with condensed vapor. calculation HIGHER than actual LOWER than actual Explanation calculation HIGHER than actual LOWER than actual After the heating process, the sample had not yet condensed when the foil caps were switched. Explanation calculation calculation HIGHER than actual LOWER than actual calculation Explanation During the heat operation, the flask was left in the hot water bath very long past the time when it had all evaporated. calculation calculation
Transcribed Image Text:THERE ARE 2 QUESTIONS (see next page for the rest) 1. A student does the same experiment as described in the Lab 1 handout and gets the following data. The mass of the empty flask with the dry foil cap was 55.041 g. The sample was heated in water at 99.5°C then allowed to condense. The flask and condensed vapor weighed 56.039 g. To determine the volume of the flask, it was filled with water giving a total mass of 270.9 g. The barometric pressure in the lab was 752 mm of Hg. Use this data to find the molar mass of the sample unknown. Show all steps and unit conversions involved. Use 0.9982 g/mL for water density. 0 2. Below (a through d) is a list of some errors that could occur during the experiment. For each error, consider the effect on the data that would be obtained and trace the effect through to the calculation of molar mass. Circle whether the calculation will yield a higher or lower value than the actual molar mass. Then explain your reasoning for each case in detail. (Note: assume the sample had a molar mass equal to the result in question 1.) A student removed the sample from the heating bath before the sample liquid had all evaporated. calculation HIGHER than actual LOWER than actual Explanation A student did not dry the outside of the flask after removing it from the water bath to weigh the flask with condensed vapor. calculation HIGHER than actual LOWER than actual Explanation calculation HIGHER than actual LOWER than actual After the heating process, the sample had not yet condensed when the foil caps were switched. Explanation calculation calculation HIGHER than actual LOWER than actual calculation Explanation During the heat operation, the flask was left in the hot water bath very long past the time when it had all evaporated. calculation calculation
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