Answer to Question #93662 in General Chemistry for jenga

Question

Complete the table for analysis. Record calculated values with the correct number of significant figures.

1. Mass of dry flask, foil and rubber band - 74.722 g
2. Temperature of boiling water- 98.7 C
3. Mass of dry flask foil rubber band and vapor- 74.921 g
4. Volume of 125 mL flask- 0.152L
5. Atmospheric pressure ( torr,atm)- 752,0.0989
6. Moles of vapor -
7. Mass of vapor-
8. Molar mass of vapor-

The molar mass of vapor was determined to be 46.5 g/mol and 43.1 g/mol respectively.

A. What is the average molar mass of the vapor?
B. What are the standard deviation and the relative standard deviation ( RSD) for the molar mass of the vapor?

4. If the atmospheric pressure of the flask is assumed to be 760 torr in question 3, what is the reported molar mass of the vapor?

b. What is the percent error caused by the error in the recording of the pressure of the vapor?

Answer 1

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