g and lear X * MindTap - Cengage Learning water treatment systems - Forkly X keAssignment/takeCovalentActivity.do?locator=Dassignment-take Use the References to access important values if needed for this question. The boiling point of water is 100.00 °C at 1 atmosphere. A student dissolves 14.72 grams of aluminum acetate, Al(CH,CO0)3 (204.1 g/mol), in 266.0 grams of water. Use the table of boiling and freezing point constants to answer the questions below. Solvent Formula K, (°C/m) Kr(°C/m) Water H,O 0.512 1.86 Ethanol CH3CH,OH 1.22 1.99 Chloroform CHCI3 3.67 Benzene C,H, 2.53 5.12 Diethyl ether CH;CH,OCH,CH3 2.02 The molality of the solution is m. The boiling point of the solution is °C. Submit Answer Retry Entire Group 9 more group attempts remaining Previous Next 10:09 PM 11/17/2021 +

g and lear X * MindTap - Cengage Learning water treatment systems - Forkly X keAssignment/takeCovalentActivity.do?locator=Dassignment-take Use the References to access important values if needed for this question. The boiling point of water is 100.00 °C at 1 atmosphere. A student dissolves 14.72 grams of aluminum acetate, Al(CH,CO0)3 (204.1 g/mol), in 266.0 grams of water. Use the table of boiling and freezing point constants to answer the questions below. Solvent Formula K, (°C/m) Kr(°C/m) Water H,O 0.512 1.86 Ethanol CH3CH,OH 1.22 1.99 Chloroform CHCI3 3.67 Benzene C,H, 2.53 5.12 Diethyl ether CH;CH,OCH,CH3 2.02 The molality of the solution is m. The boiling point of the solution is °C. Submit Answer Retry Entire Group 9 more group attempts remaining Previous Next 10:09 PM 11/17/2021 +

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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sited [Review Topics] [References] Use the References to access important values if needed for this question. The boiling point of diethyl ether, CH3 CH2 OCH2 CH3, is 34.500 °C at 1 atmosphere. K, (diethyl ether) = 2.02 °C/m In a laboratory experiment, students synthesized a new compound and found that when 10.14 grams of the compound were dissolved in 270.0 grams of diethyl ether, the solution began to boil at 34.714 °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 Submit Answer ph_08-30-2....pdf Retry Entire Group a a 9 more group attempts remaining C Previous Next 07 Show all 11:14 PM 9/12/2022
Retinol is 83.84% C, 10.58% H, and 5.58% O by mass. What is the molecular formula of retinol? Add the missing subscripts.
A solution is prepared by adding 425g of AgNO3 to 0.150L of water at 40.0∘C. The solubility of AgNO3 at 40.0∘C is 311g100.mL. How many grams of AgNO3 are expected to precipitate if the temperature is dropped to 0.00∘C where the solubility of AgNO3 is only 122g100.mL? Give the answer with three significant figures.
The freezing point of water is 0.00°C at 1 atmosphere. How many grams of manganese(II) sulfate (151.0 g/mol), must be dissolved in 273.0 grams of water to reduce the freezing point by 0.350°C ? Refer to the table for the necessary boiling or freezing point constant. Solvent Formula Kp (°C/m) Kf(°C/m) Water H20 0.512 1.86 Ethanol CH3CH2OH 1.22 1.99 Chloroform CHC13 3.67 Benzene C6H6 2.53 5.12 Diethyl ether CH3CH2OCH,CH3 2.02 g manganese(II) sulfate.
16. Determine the cahnge in boiling point for 397.7 g of carbon disulfide (Kb= 2.34 degrees Celsius kg/mol) if 35.0 g of a nonvolatile, nonionizing compound is dissolved in it. The molar mass of the compound is 70.0 g/mol and the boiling point of the pure carbon disulfide is 46.2 degrees Celsius. a. 2.34 degrees Celsius b. 5.88 degrees Celsius c. 24.8 degrees Celsius d. 2.94 degrees Celsius
Activity 1. Solve Me! Calculate the problems below. Write your solution and box your finalanswer. Follow the flow of solving like the examples given above. You may use the K b and K fof water in the examples. 1. Calculate the freezing and boiling points of a solution prepared by dissolving 15.5 gof Al (NO 3 ) 3 in 200.0 g of water. (Molar mass of Al (NO 3 ) 3 is 212.996 g/mol). 2. A solution is prepared by dissolving 120 grams of NaCl in 450 grams of water. Findthe freezing and boiling points of this solution. (Molar mass of NaCl is 58.44 g/mol) Activity 2. Know Me! Look for a book or search the web for additional information regardingthe colligative properties of solution. Refer to the guide questions below. 1. State the effect that dissolving a solute has on each of the following physicalproperties of a solvent.a. Boiling pointb. Freezing point
c) To save money, some state Department of Transportation decided to replace relatively expensive calcium chloride (CaCl2) by more affordable beet juice (mostly made of sugar molecules) in the solutions used to treat the roads before a snow/freezing rain storm. However, the beet juice was not as effective at de-icing the roads as was the calcium chloride solution. When road temperatures were very low, the beet juice treatment did not prevent the water from freezing again. You are called to one of those Departments of Transportation to: 1) Explain that observation and 2) Justify why they should continue to use calcium chloride solutions even if it is more expensive. You may even suggest a cheaper alternative to calcium chloride that will be as effective in road de-icing. Provide your answers below.
A certain liquid X has a normal freezing point of 1.30 °C and a freezing point depression constant K,= 7.47 °C·kg•mol . Calculate the freezing point of a -1 solution made of 5.61g of alanine (C,H,NO,) dissolved in 300. g of X. Round your answer to 2 significant digits. °c x10 Continue Submit Assignment O2021 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center Accessibility MacBook Air DII DD F7 F8 F9 F10 F11 00
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Will the solubility of CaCO3 in water increase or decrease if the pressure of CO2 gas above the saturated solution is increased? Note that CO2 gas reacts with water to produce a weak diprotic acid H2CO3. This acid can undergo the loss of one or two protons to form HCO3- and CO32- ions (these are bicarbonate and carbonate).
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