Data SheetUNKNOWN NUMBER:149.8345758.0812.47I1.0311.441. Mass of test tube + naphthalene2. Mass of empty test tube%3D3. Mass of naphthalene4. Mass of vial + Unknown%3D5. Mass of vial%3D6. Mass of UnknownCooling curve dataPure NaphthaleneNaphthalene + UnknownTempTimeTempTimeTempTimeTempTime79 0.5T4-9 520:7 5:3078:2 020749 S:3085.2 3084.5B15 1:3070.9 66.7072 3014.9 614.9 6:3075.6 1:08C 74 975:5220.069.8 7.69.4 7:3068.968:376:5. Imit7475.02.9749,3.28.2 276 Y25.022. 3..2:10"NS 1303:30 24.0 923-4 9:3074.9.4.30 23.58:)0679 967.2 9.30.21.871.4 433074.994.9 u१:१०:30 67.2 1020.9 Sb6.5 10.3075-575010:5066.0 17. Freezing point of pure Naphthalene from cooling curve =8. Freezing point of solution9. AT10. Molality of solution, m11. Molar mass of Unknown12. Include graphs of cooling curvesCALCULATIONS

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Answered: 7. Freezing point of pure Naphthalene…

7. Freezing point of pure Naphthalene from cooling curve- 8. Freezing point of solution 9. AT 10. Molality of solution, m I1. Molar mass of Unknown 12. Include graphs of cooling curves CALCULATIONS

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter7: Statistical Data Treatment And Evaluation

Section: Chapter Questions

Problem 7.21QAP

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PART3-1ABORATORY FQUIEMENT FQUIPMENTNAME FUNCTION To hold test tubes. Attaches to a retort stand to support glassware being heated. To pour liquid from a large container into a small container. To provide a flame during an experiment. To light the Bunsen burner. To attach test tubes to a retort stand. To clean substances out of a test tube. To hold a hot crucible or flask. To hold a hot test tube. To place on the lab bench to prevent burning or to use with ring clamp. To transfer small amounts of liquid. To grow bacteria or contain small experiments. To hold liquids. To measure liquids. To contain experiments (a stopper can be used to close the flask). To hold a hot beaker. To perform an experiment with a different substance in each well. To hold chemicals and perform experiments in. To scoop and transfer small amounts of substances. To stir during experiments that involve mixing or dissolving.
Data Collection Mass of the original sample of mixture (g) 1.547 Mass of recovered naphthalene (g) 0.511 Mass of recovered 3-nitroaniline (g) 0.480 Mass of recovered benzoic acid (g) 0.472 % by mass of naphthalene in original sample % by mass of 3-nitroaniline in original sample % by mass of benzoic acid in original sample Total percent recovered You find a separatory funnel set up in a fume hood. There are clearly two visible layers. Describe a method you could use to determine which layer is the aqueous layer. Normal BIIIU X2| X² | → EE E fx | ® If you had a mixture of butyric acid and hexane, how would you separate the two compounds? Normal BII|U X2 | X² | → fx |