Experiment 3 Freezing Point Depression

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Chemistry HW need help, how to do these caculation and answer these questions?

B Solutions Review Quiz - CHM11 X 101 Chem101 app.101edu.co K Question 3 of 29 Submit Which of the following best describes what takes place during the solvation process? A) Molecules of the solute are attracted to one another more than the solvent. B) Solvent molecules surround solute molecules and pull them out into the solution. C) Molecules of the solvent are attracted to one another and exclude solute molecules. D) Solvent and solute molecules arrange themselves along a boundary. + ...

Compute the boiling point elevation of a salt water solution that contains 4.10 g of NaCl dissolved in 190 mL of water. Enter the number of degrees celsius that the boiling point will be elevated. 0.188 Submit Answer You have entered that answer before Incorrect. Tries 6/99 Previous Tries

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sq An aqueous solution of a nonionic (that is, nonelectrolyte) solute has a freezing point of -0.293 °C. The solution contains 1.94 g solute dissolved in 78.9 g H₂O. What is the molar mass of the solute? Submit Submit Answer g/mol Show Approach Show Tutor Steps Retry Entire Group 9 more group attempts remaining Cengage Learning Cengage Technical Support Previous Next> Save and Exit

4 $ R F An aqueous solution of barium chloride has a concentration of 0.429 molal. The percent by mass of barium chloride in the solution is Submit Answer F4 % 5 T G F5 Retry Entire Group 8 more group attempts remaining Cengage Learning | Cengage Technical Support 6 [Review Topics] [References] Use the References to access important values if needed for this question. Y H MacBook Air F6 & 7 U F7 * 8 FB K ( 9 %. FO O 0 F10 P Previous Next> + 11 Save and Exit 9:12

1. ASSERTION: The solubility of gases in water follows the order O2 < N2 < SO2 < CO2 < NH3. REASON: For appreciable solubility, the solute-solvent interactions should outweigh the solute-solute and     solvent-solvent interactions. a. Assertion and reason both are correct statements and reason is the correct explanation for assertion. b. Assertion and reason both are correct statements but reason is not the correct explanation for assertion. c. Assertion is a correct statement but reason is a wrong statement. d. Assertion is a wrong statement but reason is a correct statement. 2. ASSERTION: The solubility of all gases in water decreases with the rise in temperature. REASON: The dissolution of gases in water is an endothermic process. a. Assertion and reason both are correct statements and reason is the correct explanation for assertion. b. Assertion and reason both are correct statements but reason is not the correct explanation for assertion. c. Assertion is a correct…

Table 10.4 (data)     B. Freezing-Point Depression Sodium Chloride Solute Ethylene Glycol Solute Mass of beaker + ice + water 111.438 g  112.337 g Freezing point of pure wate 58.650 g 53.263 g Mass of sample + container 0 C 0 C Mass of empty container 7.686 g 33.185 g Freezing point of solution 2.676 g  28.524 g  Table 10.5 (report) Sodium Chloride Solute Ethylene Glycol Solute Total water mass     Mass of solute     Moles of solute     ?t f     Water mass in kg     Solution molality     K f     Use Equation to complete table 10.5 from the attached picture.

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A certain liquid X has a normal freezing point of -0.50 °C and a freezing point depression constant K, 7.06 °C-kg mol . Calculate the freezing point of a -1 solution made of 16.g of iron(III) chloride (FeCl,) dissolved in 150. g of X. Round your answer to 2 significant digits. Check Save For Later Submit Assa 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use I Privacy Center A 心xe MacBook Pro 26 888 F4 F2 F3 F6 F7 F10 # 3 $ & 8 5. R. B. N. alt H option command command option

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What conclusions can you draw about the solubility of gases as temperature increases? Figure 3 Figure 1 Figure 2 10 NO CH, methane 0, CO CH N2 2.0 2.0 axygen CO carbon monoxide 1.0 nitrogen He helium 20 30 Temperature ("C) 10 40 50 10 20 30 40 10 20 30 Temperature (C) Temperature ("C) Look at axes for the graphs above and point out the similarities and the differences between them. Is the trend for solubility of gases still the same? Use the graph below to explain the behavior of noble gases in water. Why does the solubility show the trend it does in the figure below? 2.0E-04 1.5E-04 Xenon 1.0E-04 Krypton 5.0E-05 Argon Neon Hellum. 0.0E+00 10 20 30 Temperature (C) Solubility (molelmole, 1 atm) Solubility (10-3 mol L-) Solubility (mg/100g H,0) ||||| Solubility (mM)

Calculate the quantity (mL) of glycerin needed to prepare 250 mL of the following ophthalmic solution. Report your answer to 2 decimal places. DO NOT include units. Erythromycin lactobionate Dexamethasone sodium phosphate Glycerin Sterile water for injection, ad 500 mg 100 mg 2.5 mL 100 mL

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8. A certain substance X has a normal freezing point of -8.4 °C and a molal freezing point depression constant K, = 2.33 °C·kg-mol Calculate the freezing point of a solution made of 63.48 g of urea ((NH2),CO) dissolved in 700. g of X. Round your answer to 3 significant digits. 0c Submit Assignment Continue O 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center Accessibility II Finder F11 F12 F9 F10 F8

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ne > My courses > 1802 > Topic 1 Final Exam What is the molality of NaCl in a solution that is 2.5 M NaCl, with a density of 1.02 g/mL? formual mass of NaCl = 58.5 g/mol of PREVIOUS ACTIVITY second exam Type here to search