You find out this chemical splits apart into five ions when dissolved. You then buy a small amount of the mystery chemical, and start conducting freeze point depression experiments (in H₂O), to try and find the Molar Mass of the compound. You use 20.0g of the deicing agent and it depresses the freezing point of 35.0g of water by 15.4 °C. What is the molar mass of the deicing agent? (you did this in lab) kf = 1.86 °C*kg/mol 425 g/mol 69.0 g/mol 344 g/mol 88.0 g/mol

You find out this chemical splits apart into five ions when dissolved. You then buy a small amount of the mystery chemical, and start conducting freeze point depression experiments (in H₂O), to try and find the Molar Mass of the compound. You use 20.0g of the deicing agent and it depresses the freezing point of 35.0g of water by 15.4 °C. What is the molar mass of the deicing agent? (you did this in lab) kf = 1.86 °C*kg/mol 425 g/mol 69.0 g/mol 344 g/mol 88.0 g/mol

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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The freezing point of 57.08 g of a pure solvent is measured to be 50.83 ºC. When 2.86 g of an unknown solute (assume the van 't Hoff factor = 1.0000) is added to the solvent the freezing point is measured to be 48.78 ºC. Answer the following questions ( the freezing point depression constant of the pure solvent is 7.33 ºC·kg solvent/mol solute). Be sure to use the appropriate number of sig figs What is the molality of the solution? How many moles of solute are present? What is the molecular weight of the solute?
3. You are asked to calculate the Kf for t-butyl alcohol (MW = 74.122 g/mol). You gather the following information in your experiment. You weigh out 2.124 g t-butyl alcohol and you determine the freezing point of the solvent t-butyl alcohol is 21.6 °C (freezing point pure t-butyl alcohol). You then add water to the test tube with the t-butyl alcohol and measure the freezing point to be 15.3 °C. What key piece of information are you missing to calculate the Kf?
5 L山 When 1.06 g of a certain molecular compound X are dissolved in 85.0 g of dibenzyl ether ((C,H,CH,),0), the freezing point of the solution is measured to be 0.9°C. Calculate the molar mass of X. If you need any additional information on dibenzyl ether, use only what you find in the ALEKS Data resource. Also, be sure your answer has a unit symbol, and is rounded to 1 significant digit. 自 OL Check Save For Later Submit Assignment O2022 McGraw Hill LLC. AlI Rights Reserved. Terms of Use Privacy Center Accessibility EPIC 中Xe MacBook Pro F2 F3 F4 F7 F8 F10 6-5 #3 3. 2 $ 一 8 dele R. A C. W alt alt option 10 command option 1Q15
* 00 les When 634, mg of a certain molecular compound X are dissolved in 60. g of cyclohexane (CH,), the freezing point of the solution is measured to be 6.0 °C. Calculate the molar mass of X. If you need any additional information on cyclohexane, use only what you find in the ALEKS Data resource. Also, be sure your answer has a unit symbol, and is rounded to 1 significant digit. OLX Check Save For Later Submit Assignment O 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center Accessibility EPIC MacBook Pro esc F8 F10 F11 F2 F4 F5 F7 & # $ 2 5. 6. 4. 7. 3. R tab A G os lock C. B. command option control option command
When 4.59 g of a certain molecular compound X are dissolved in 35. g of dibenzyl ether ((C%H,CH,),°). the freezing point of the solution is measured to be 0.9 °C. Calculate the molar mass of X. If you need any additional information on dibenzyl ether, use only what you find in the ALEKS Data resource. Also, be sure your answer has a unit symbol, and is rounded to 1 significant digit. 0 00 0.0 X x10
When 1.38 g of a certain molecular compound X are dissolved in 90.0 g of cyclohexane (C,H,,), the freezing point of the solution is measured to be 6.3 °C. Calculate the molar mass of X. If you need any additional information on cyclohexane, use only what you find in the ALEKS Data resource. Also, be sure your answer has a unit symbol, and is rounded to the correct number of significant digits. x10