In oil In water Sample Mixture Description Solubility (+/-) Solubility (+/-) Mixture Description Acetic acid (vinegar) Sucrose (sugar) Monosodium glutamate (vetsin) Cellulose |(cotton fiber) Isopropyl or ethyl alcohol Fatty acid salts (soap) Kerosene Naphthalene balls 50ogy Environmental Science (optional) (+) soluble/miscible; (-) insoluble/immiscible; (+/-) slightly soluble/miscible

In oil In water Sample Mixture Description Solubility (+/-) Solubility (+/-) Mixture Description Acetic acid (vinegar) Sucrose (sugar) Monosodium glutamate (vetsin) Cellulose |(cotton fiber) Isopropyl or ethyl alcohol Fatty acid salts (soap) Kerosene Naphthalene balls 50ogy Environmental Science (optional) (+) soluble/miscible; (-) insoluble/immiscible; (+/-) slightly soluble/miscible

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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Ethylene glycol (C₂H₆O₂) is used as an additive to the water in your automobile to lower its freezing point. A solution of ethylene glycol in water has a freezing point of -8.80°C. What is the mole fraction of ethylene glycol in this solution? (Kf for water is 1.86°C･kg/mol). Please use the correct significant figures. Thank you!
Examine the solubility chart below and answer questions 5-12 300 Sugar 260 KNO 220 - * 180 140 NaBr 100 KBr 60 KCL Naci 20 Ce,(so 20 40 60 80 100 Temperature ("C) 5 hi ost soluble in water at 0°C? 5. D. NaBr E. Ce2(SOa)3 6. Whir st soluble in water at 50°C? 6. D. NaBr E. Ce2(SO4)3 7. Which innic soluble in water at 60°C? 7. D. NaBr E. Ce2(SO4)3 8. WLinh i - st soluble in water at 70°C? 8. D. NaBr E. Ce2(SO4)3 9. Which ionic solid is most soluble in water at 80°C? 9. A. sugar (C12H22011) B. KNO3 C. NANO3 D. NaBr E. Ce2(SO4)3 Solubility (g solute per 100 g H,0)
Part 2 Data Mass of Urea (g): Buret Initial Volume (mL): water Part 2 Calculation: 4.05819 24.90 A. Find the Keq for dissolving urea (saturated solution) Mass of urea used 4.05819 Moles urea = Final Temperature of saturated solution ("C): Buret Final Volume (ml): fikcal - In 1.Write the chemical equation for urea dissolving: CityN₂0 (s) + H₂0 (1) → (H₂N₂O) (aq) Volume in Liters = 2.Calculate the molarity of the urea, [Urea]eam for the saturated solution of urea in water. You must first find the moles of urea (molar mass 60.05 g/mol). Then you must use the volume given in the data (above) to find the molarity of the urea in the saturated solution. Show calculations here. 3. Calculate AG soln Volume of water used: 3.88 ML Molarity of saturated solution (NOTE: this molarity = Keq ) = To do this, use: AG soln = - RT In Keq AH-TAS soln 4. Calculate AS soln Use: AG First, re-arrange the equation given above to solve for AS soln 6 27.0 W AS soln AGOsoln Then plug in the values you got for AG°…
The molal freezing point depression constant K,=2.88 °C•kg•mol 'for a certain substance X. When 4.138 g of urea (NH),CO) are dissolved in 100. g of X, the solution freezes at 1.1 °C. Calculate the freezing point of pure X. Round your answer to 2 significant digits. Check Explanation C2022 McGraw Hill LLC. All Rights Reserved Terms of Use Pmvacy Center Accessibility tv
Boiling Point Elevation/Freezing Point DepressionT = m KWhere: T = T(solution) - T(pure solvent) * m = (# moles solute / Kg solvent) Kb = boiling point elevation constant. Kf = freezing point depression constant. Kb and Kf depend only on the SOLVENT. Below are some common values. Use these values for the calculations that follow. Solvent Formula Kb (°C / m) Kf (°C / m) Water H2O 0.512 -1.86 Ethanol CH3CH2OH 1.22 -1.99 Chloroform CHCl3 3.67 Benzene C6H6 2.53 -5.12 Diethyl ether CH3CH2OCH2CH3 2.02 note that ΔT as defined above will be a negative number for freezing point depression. Therefore, Kf must also be given as a negative number.
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Consider the table below: Compound Density Ether 0.8415 g/mL Dichloromethane 1.311 g/mL Water 1.00 g/mL In an immiscible mixture of water and dichloromethane, which compound is on the top? ["water", "dichloromethane", "cannot determine from this information"] In an immiscible mixture of water and ether, which compound is on top? ["water", "ether", "cannot determine from this information"]
In this picture the percentage is given as 0.9% mass/volume. This means there is 0.9g of sodium chloride for every 100mLs of solution. Assume you have 10.0mLs of the solution. How many grams of sodium chloride are present? Provide step by step.
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Biological studies have found that aqueous solutions containing as little as 28 µg of allicin per milliliter inhibit bacterial growth. Express this amount as the number of moles of allicin per liter of solution. \(28~\text{ug/mL}=\) \(text{mol/L}\) 20 F3 II F8 F4 F5 F6 F7 F9 F10 F11 F12 & %24 4. 3 5 7 9 { } P E T Y U %3D * CO R %23
- 2022.pdf - Adobe Acrobat Pro DC (32-bit) ndow Help oter 14 - Soluti. x 2 / 3 100% 9) An aqueous solution has a normal boiling point of 103.0°C. What is the freezing point of this solution? For water Kb = 0.51°C/m and Kf=1.86°C/m. 9) A) -0.82°C B) -3.0°С С) -3.6°C D) -11°C 10) A solution of an 22.4 g of an unknown protein dissolved in enough water to make 0.150 L of solution has an osmotic pressure of 658 torr at 25°C. Based on these data, what is the molar mass of the protein? 10) search hp