Aqueous ethanol solutions are prepared by mixing measured weights of assayed ethanol and organic-free water. What is the molality of an aqueous solution that is 26.2 % ethanol, C2H5OH , by mass? Atomic Mass: C=12.01 ; H=1.008 ; O= 16.0 Express your answer in two decimal places. Do not write the unit.

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Q: Aqueous ethanol solutions are prepared by mixing measured weights of assayed ethanol and…

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Q: Aqueous ethanol solutions are prepared by mixing measured weights of assayed ethanol and…

A: We have to calculate the molality.

Q: Aqueous ethanol solutions are prepared by mixing measured weights of assayed ethanol and…

A: Molality = moles of solute/weight of solvent Moles of solute =given mass/ molar mass

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Q: Aqueous ethanol solutions are prepared by mixing measured weights of assayed ethanol and…

A: Molality is defined as number of moles of solute per kg of solvent.

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A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

Q: Aqueous ethanol solutions are prepared by mixing measured weights of assayed ethanol and…

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Q: 0.9% (w/v) sodium chloride (MW = 58 g/mol) solution (Normal Saline Solution) has an osmotic pressure…

A: #1: Given the osmotic pressure of the solution, π = 3.91 atm  Temperature, T = 25 +273.15 = 298.15 K…

Q: Aqueous ethanol solutions are prepared by mixing measured weights of assayed ethanol and…

A: 26.2% ethanol by mass means 26.2 gm ethanol and 73.8 gm water are present.  Molecular weight of…

Q: Aqueous ethanol solutions are prepared by mixing measured weights of assayed ethanol and…

A:

Q: Aqueous ethanol solutions are prepared by mixing measured weights of assayed ethanol and…

A: Given that:  Mass percent of ethanol = 29.4 %  Mass % = (mass of solute/mass of solution)×100

Q: Aqueous ethanol solutions are prepared by mixing measured weights of assayed ethanol and…

A: Given that -  Mass percentage of ethanol = 18.5% , which means that Solution contains 18.5 gram of…

Q: What is the percent composition (% w/v) of the solution created by dissolving 2 packets of sugar…

A: Ice tea volume = 24 ounce  1 ounce = 29.57 mL Ice tea volume =29.57×24 mL=709.68 mL

Q: An aqueous solution that is 4.61% NaOH by mass has a density of 1.06 g/mL.  Calculate the molarity…

A: Given,  Mass percentage of NaOH = 4.61%  Density = 1.06 g/mL  Calculate  a). Molarity = ?  b). Moles…

Q: 6. Molality is another way to express the concentration of the solution. It is more precise than…

A: Given, The mass of ethanol is 119 g. The density of ethanol is 0.789 g/cm3

Q: A solution contains 92.2g of methanol, CH3OH, dissolved in sufficient water to give a  mass of…

A: The molality of a solution is calculated by the formula: Molality m=mol of solutemass of solvent kg

Q: What is the molality, m, of the solution?

A:

Q: Aqueous ethanol solutions are prepared by mixing measured weights of assayed ethanol and…

A: % by mass of ethanol = 34.5 % Mol. Mass of ethanol = 46.068 g/mol We have to convert % by mass into…

Q: A solution is prepared by dissolving iodine, I2, in tetrachloromethane, CCl4, at 25 °C. What is the…

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Q: 1. Determine the freezing point if 10 grams of sucrose (C12H22O11) was dissolved in 100mL of water.

A: According to our policy, as there is more than one question only the first question is solved here.…

Q: If a 1-molal solution of NaCl in water shows a freezing-point depression of 3.9˚C, what is the…

A: The relationship between depression in freezing point and molality is  ∆Tf = i × Kf × m ∆Tf =…

Q: Aqueous ethanol solutions are prepared by mixing measured weights of assayed ethanol and…

A: Molality of 17.8% ethanol can be calculated as given below.

Q: Aqueous ethanol solutions are prepared by mixing measured weights of assayed ethanol and…

A: Given that : % mass of ethanol in the aqueous solution = 26.8 % Atomic mass of C = 12.01 g/mol…

Q: Aqueous ethanol solutions are prepared by mixing measured weights of assayed ethanol and…

A: Molality is defined as No.of moles of solute devided by mass of solvent in Kg .

Q: Aqueous ethanol solutions are prepared by mixing measured weights of assayed ethanol and…

A: To Solve this problem first we have to calculate the number of moles of ethanol then we will…

Q: The density of the aqueous solution of 0.512 M sucrose is 1.13 g/mL. What is the molality (mol/kg)…

A: Given :-  molarity of solution = 0.512 M  density of solution = 1.13 g/mL  molar mass of sucrose =…

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A: A question based on concentration terms that is to be accomplished.

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Q: 1.Calculate the molality of a solution containing 10.8g of ethylene glycol (C2H602) in 360g of…

A: Molality of solution is defined as number of moles of solute dissolved per kg of solvent.

Q: 1. What is the molality of a solution containing 48.2g of CaO in 392g of solvent? 2. What is the…

A: Given data: 1) Weight of CaO = 48.2 g Weight of solvent = 392 g 2) Moles of solute = 4.79 moles…

Q: Calculate the osmotic pressure of each of the following aqueous solutions at 20.00°C:   20.3  g of…

A: step 1) osmotic pressure : π = CRT π = osmotic pressure C = concentration R = gas constant = 0.0821…

Q: Aqueous ethanol solutions are prepared by mixing measured weights of assayed ethanol and…

A: Given  Mass % of C2H5OH  = 45.1 %  Molality of solution = ?

Q: An aqueous solution of isopropyl alcohol, C3H30, rubbing alcohol, has a mole fraction of alcohol…

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Q: What is the molality of a solution made by dissolving 92g ethanol (C2H6O) in 200g water?

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Q: Solubility of glucose, C6H1206, in water is 120 g glucose / 100 g H2O at 30 °C. The following…

A: Solution (i) Mass of solution = 100 gm Mass of glucose = 45 gm Moles of glucose = weight / molar…

Q: Aqueous ethanol solutions are prepared by mixing measured weights of assayed ethanol and…

A: Molality is defined as no.of moles of solute devided by mass of solvent in Kg.

Q: a. Freezing point of pure water, Tf = 0 °C Freezing point of solution, Tf = -0. 34 °C Freezing point…

A: The molar mass of sucrose from the above given data is calculated as follows:

Q: Fill in the table below for aqueous NAOH solutions Molality 2 molal Molarity % mass/mass Mole…

A: 1.  denominator of the given term is let 1 and other terms can be calculated . 2. For inter…

Q: A solution of fructose, C6H1206, a sugar found in many fruits, is made by dissolving 27.0 g of…

A: 2.7 ×10-3

Q: The solubility of a compound (molar mass = 175 g/mol) in water is found to be 7.75 grams per 100.0…

A: Molality = Number of moles of solute/Mass of solvent in Kg Number of moles = Mass/molar mass

Q: Aqueous ethanol solutions are prepared by mixing measured weights of assayed ethanol and…

A: We have to calculate the molality of solution..

Q: The molality of an aqueous NaCl solution that freezes at -1° C is equal to the molality of another…

A: For calculation of Molality of aqueous sodium chloride NaCl solution can be calculated by help of…