1. [0/1 Points] DETAILS MY NOTES Calculate the mass of 19.23 mL cyclohexane in kg. 0.01 x kg UCSCGENCHEML1 7.PRE.001. PREVIOUS ANSWERS ASK YOUR TEACHER PRACTICE ANOTHER Additional Materials Molar Mass of an Unknown Organic Solid by Freezing Point Depression Lab Manual: Table of Contents Submit Answer

1. [0/1 Points] DETAILS MY NOTES Calculate the mass of 19.23 mL cyclohexane in kg. 0.01 x kg UCSCGENCHEML1 7.PRE.001. PREVIOUS ANSWERS ASK YOUR TEACHER PRACTICE ANOTHER Additional Materials Molar Mass of an Unknown Organic Solid by Freezing Point Depression Lab Manual: Table of Contents Submit Answer

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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Graw Hill C Chegg - Get OWLv2 | Ass MOTION EYE Blackboard Submit Answer Content ast.cengagenow.com/ilm/takeAssignment/takeCovalentActivity.do?locator= assignment-take OWLv2 | X CengageNO [Review Topics] [References] Use the References to access important values if needed for this question. The boiling point of benzene, C6H6, is 80.100 °C at 1 atmosphere. Kb (benzene) = 2.53 °C/m Retry Entire Group In a laboratory experiment, students synthesized a new compound and found that when 12.33 grams of the compound were dissolved in 241.3 grams of benzene, the solution began to boil at 80.548 °C. The compound was also found to be nonvolatile and a non-electrolyte. What is the molecular weight they determined for this compound? g/mol New Tab 4 more group attempts remaining Other Bookmarks
* 00 A solution is made by mixing equal masses of methanol, CH,O, and ethanol, C, H,O. Determine the mole fraction of each component to at least three significant figures. Xmeth X eth %3D Show all 10:02 PM 10/17/2021 PrtScr Insert Delete F10 F11 F12 F8 F5 Backspace 24 6. { R. Enter H J K Shift B. N Alt Ctrl Home PgDn End
Table 9.1 (data) Apperance KNO3+water before heating NaCI + water before heating KNO3+ water after heating NaCl + water after heating KNO3+ water after cooling NaCl + water after cooling Table 9.2 (report) Solute with soubility most influenced by termperature Reasons for choice
A certain liquid X has a normal freezing point of 1.30 °C and a freezing point depression constant K,=7.47 °C kgmol.Calculate the freezing point of a solution made of 5.61g of alanine (C,H,NO,) dissolved in 300. g of X. -1 %3D Round your answer to 2 significant digits. 2.9 °C x10 Submit Assignment Continue O 2021 McGraw Hill LLC. All Rights Reserved. Terms of Use I Privacy Center Accessibility MacBook Air DII DD F11 F12 F9 F10 F7 F8 F6 esc F3 F4 F5 F1 F2 @ %23 $4 de 4. 6. 8. 1
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calculate the Kf for BHT from your data. calculate the molality of your unknown solution using your data and the Kf found calculate the molar mass of your unknown using your data and the molality of the unknown solution found Trial Sample Value Unit Trial 1 and 2 Mass of BHT 10.001 g Trial 3 Mass of dichlorobenzene 0.509 g Trial 4 Mass of BHT 10.171 g Trial 4 Mass of unknown 0.562 g N/A Unknown Letter A Value Units a. Trial 1 – Pure BHT 69.3 C b. Trial 2 – Pure BHT 69.3 C c. Trial 1 and 2 – Average Melting Point 69.3 C d. Trial 3 – BHT + dichlorobenzene 65.9 C e. Trial 4 – BHT and unknown 63.0 C
Learning Goal: To understand deviations from the ideal vapor pressure for solutions of two liquids. Part B Raoult's law is used to predict the vapor pressure of an ideal solution that contains one or more volatile components. For a solution with only one component Imagine a solution of two liquids in which the molecules interact more favorably than they do in the individual liquids. Will this solution deviate positively from, deviate negatively from, or ideally follow Raoult's law? • View Available Hint(s) Peoln = Poly X Xgolv O Itwill deviate positively. where Poln is the vapor pressure of gaseous solvent above the solution, Psoly is the vapor O twill deviate negatively. pressure of the pure solvent, and Xoly is the mole fraction of the solvent. O It will be an ideal solution. An assumption of Raoult's law is that the interactions between the different components of the solution are similar in magnitude to the interactions of each of the components with themselves; in other words, the…