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18 Nov 2019
Optional) Ask your instructor for the name of your unknown liquid. Using van der Waals' equation and the values of a and b for your compound, repeat the calculation for the moles of vapor, Ar (show for Trial 1 below), to determine a more accurate molar mass of the compound. E Calculations (van der Waals equation) Unknown number_-_a = b 1. Moles of vapor, ysps (mol) 2. Mass of vapor, magos (g) Trial I Trial 3 Trial 2 3. Molar mass of compound (g/mol) . Average molar mass (g/mol) "Calculation of from van der Waals' equation for Trial 1. Show work here. boratory Questions cle the questions that have been assigned. Part A.1. The mass of the flask (before the sample in placed into the flask) is measured when the outside of the flask is wet. However, in Part B.3, the outside of the flask is dried before its mass is measured. a. Will the mass of vapor in the flask be reported as too high or too low, or will it be unaffected? Explain. Will the molar mass of vapor in the flask be reported as too high or too low, or will it be unaffected? Explain. art A.1. From the time the mass of the flask is first measured in Part A.1 until the time it is finally measured in Part 3, it is handled a number of times with oily fingers. Does this lack of proper technique result in the molar mass of e vapor in the flask being reported as too high or too low or as unaffected? Explain t A.2. The aluminum foil is pierced several times with large pencil-size holes instead of pin-sizs How will this oversight in the nroced
Optional) Ask your instructor for the name of your unknown liquid. Using van der Waals' equation and the values of a and b for your compound, repeat the calculation for the moles of vapor, Ar (show for Trial 1 below), to determine a more accurate molar mass of the compound. E Calculations (van der Waals equation) Unknown number_-_a = b 1. Moles of vapor, ysps (mol) 2. Mass of vapor, magos (g) Trial I Trial 3 Trial 2 3. Molar mass of compound (g/mol) . Average molar mass (g/mol) "Calculation of from van der Waals' equation for Trial 1. Show work here. boratory Questions cle the questions that have been assigned. Part A.1. The mass of the flask (before the sample in placed into the flask) is measured when the outside of the flask is wet. However, in Part B.3, the outside of the flask is dried before its mass is measured. a. Will the mass of vapor in the flask be reported as too high or too low, or will it be unaffected? Explain. Will the molar mass of vapor in the flask be reported as too high or too low, or will it be unaffected? Explain. art A.1. From the time the mass of the flask is first measured in Part A.1 until the time it is finally measured in Part 3, it is handled a number of times with oily fingers. Does this lack of proper technique result in the molar mass of e vapor in the flask being reported as too high or too low or as unaffected? Explain t A.2. The aluminum foil is pierced several times with large pencil-size holes instead of pin-sizs How will this oversight in the nroced
davejakeLv2
1 Jun 2022
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