The following data were recorded in determining the molar mass of a volatile liq

Question

The following data were recorded in determining the molar mass of a volatile liquid following the experimental procedure of this experiment. Complete the table for the analysis.

Need help with part 3 - b a and b thank you in advance

3. a. The following data were recorded in determining the molar mass of a volatile liquid following theimenta Procedure of this experiment. Complete the table for analysis. (See Report Sheet.) Record calculate the correct number of significant figures calculated hental with A. Preparing the Sample Calculation Zone 1. Mass of dry flask, foil, and rubber band (8)74.722 B. Vaporize the Sample Part D.I 2. Temperature of boiling water CC) 3. Mass of dry flask, foil, rubber band, 0.9 gol atm x0.152 0.0821 L-a+n/msik . 3 1. and vapor (g) C. Determine the volume and Pressure of the Vapor 1. Volume of 125 mL. flask(L 2. Atmospherie pressure (torr, atm) Part D.2 0.152 752.0.989 121-. 322 D. Calculations 1. Moles of vapor, 6.199 (mol Equation 12.1 Show calculation. 6.00492 199 Part D.3 2. Mass of vapor, mgr (8) 0 194 Show calculation : 40.4 Molar mass of vapor (e/mol) Show calculation. 3. nol b. For Trials 2 and 3, the molar mass of the vapor was determined to be 46.5gmol and 43,.1 g/mol respectively. a. What is the average molar mass of the vapor? Data Analysis, B. b. What are the standard deviation and the relative standard deviation (%RSD) for the molar mass of the vapor? Data Analysis, C and D

Explanation / Answer

a) The average is: (46.5 g/mol + 43.1 g/mol)/2 = 44.8 g/mol

b)The standard deviation: 2.4 g/mol

%RSD = 5.4%

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