Given: mass of ethanol used in the experiment =15.7g Mass of unknown solution =4.09g Volume of ethanol used in the experiment =20mL Boiling point of pure ethanol =82.3 Celsius  Boiling point of unknown solution = 86.2 Celsius  What is the molality of the solution from the measured boiling point elevation ?

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A: The vapour pressure of a solution can be determined as below : Psolution  = Xsolvent. Psolvent Where…

Q: Determine the freezing point depression of the solution. Calculate the molality of the solution.…

A: Mass of sucrose = 138.50 g Mass of water = 250 g = 0.250 kg Freezing point of solution = -3.00oC Kf…

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A: Given Mass of compound = 1.538 g mass of cyclohexane = 75 g  freezing point of the solution = 2.16°C…

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A: Given,  Mass of glucose = 18.00 g  Mass of water = 150.0 g  Boiling point of the solution = Tb =…

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A: 1. Mass of beaker + test tube = 85.364 g2. Freezing point from cooling curve = 5.68°C1. Mass of…

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Q: Suppose a glucose solution was prepared by dissolving 5.00 g of glucose in 100 g of water. At 363 K…

A: Colligative properties are those properties which depends on the number of moles of a solute. There…

Q: At 300°K, the vapor pressure of pure benzene (C6H6) is 0.1355 atm and the vapor pressure of pure…

A: The solution of first part is given in below image

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

A: We have to calculate the molality.

Q: 1.20 mol of a nonvolatile, nonelectrolyte hydrocarbon is dissolved in 1,115.7 g of benzene. What is…

A: Elevation in Boiling point is the rise in the boiling point of the solution on addition of solute to…

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

A:

Q: A mixture is made by mixing equal volumes of corn syrup (d=1.4 g/mL, C6H14O7) and water (d=1.0 g/mL)…

A: Molality = number of moles of solute/Mass of solvent in Kg

Q: What is the boiling point of a solution composed of 15.0 grams of urea [molar mass  (60.056 g =…

A: Given ; Mass of urea i.e solute = 15.0 g Mass of water i.e solvent = 0.500 Kg  Molar mass of urea =…

Q: What is the mass fraction of salt? A. 0.0476 B. 0.0500 C. 0.9524 D. 0.0876 What is the mole fraction…

A: Since you have posted questions with subparts , as per guidelines we can answer only three per…

Q: A 3.0-g sample of a nonelectrolyte was isolated from beef fat. The molecular weight of the compound…

A: Given data: Normal boiling point of ethyl alcohol (Tbo) = 78.41 ℃ Kb of ethyl alcohol = 1.22 ℃/m…

Q: Use the following information to calculate the molar mass of the unknown Mass of unknown solute =…

A: The relation between depression in freezing point and molality of a solution is given as follows;…

Q: A solution of:...is boiled SOLVENT: Water (H2O) - 100mL or 100.00g SOLUTE: Salt (NaCl) - 11.60g…

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Q: Identify the molality of a solution prepared by dissolving 28.60g of glucose into 250 g of water.…

A: Mass of glucose = 28.60 g  Mass of water  = 250 g  1000 g = 1 Kg 250 g = 0.250 Kg  Molality = ?

Q: The molar mass of unknown molecular compound is determined using freezing point depression. The…

A: Since benzene is non, electrolyte, i = 1 ∆Tf = Tbenzene -T solution          = 5.53 -(-10.21) =…

Q: Given: mass of ethanol used in the experiment = 15.7g mass of unknown solution =4.09g Volume of…

A: From molality we can calculate the moles of unknown.

Q: A solution of table sugar in water contains 5.25% by mass sucrose. Calculate: a)the mass of sucrose…

A: To find out mass of sucrose first check mass in 5.25% solution. Use that relation to find mass of…

Q: Consider an aqueous solution containing 1.0 g/L. of a protein (molar mass 9.7 x 10 gmol) with a…

A: Freezing point depression: It shows the depression or decrease in freezing point when a pure solvent…

Q: The molality of an aqueous solution of sugar (C12H22O11) is 2.58 m. Calculate the mole fractions of…

A: 2.58 m - 2.58 of sugar present in 1 kg water. Molality = moles of soluteweight of solvent in kg 2.58…

Q: 45.5 grams of urea (NH2CONH2) was dissolved in water to produce 495.5 grams of solution. Calculate…

A: we ave given that mass of urea = 45.5  grams molar mass of urea = 60.06g/mole if we add 45.5gram of…

Q: he molar mass of unknown molecular compound is determined using freezing point depression. The…

A: Kf = molal depression constant

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: pital grade Comet liquid cleaner solution is 1.45% by mass sodium hypochlorite in water [d (sol’n) =…

A: The solution has two components.one is  NaClO as a solute and other is water as a solvent.1.45% by…

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: An aqueous antifreeze solution is 38.5% ethylene glycol (C2H6O2) by mass. The density of the…

A:

Q: Consider an aqueous solution containing 1.0 g/L of a protein (molar mass = 6.9 x 10* g/mol) with a…

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 made using 280.0 g of H2O (molar mass= 18.02 g/mol) and 75.89 g of fructose C6H12O6…

A:

Q: What would be the theoretical freezing point of a solution made by dissolving 10.75 g of CoCl 2 in…

A: Since you have posted multiple questions, we will answer the first one for you. Kindly post the…

Q: A 0.194-g sample of a nonvolatile solid solute dissolves in 9.82 g of cyclohexane. The change in the…

A: Depression in freezing point is a colligative property and is given as follows,

Q: A student prepared a sugar solution containing 1.4382 g of sugar (C12H22011, 342.29 g/mol) in 5.00…

A: Depression in freezing point (∆Tf) = Kf x m where, Kf = cryoscopic constant m = molality

Q: The solution contained 2.743 mg of protein in sufficient H2O to form 17.66 of solution The measured…

A: A numerical problem based on colligative property, which is to be accomplished.

Q: performing an experiment on freezing point depression, the solution was prepared by dissolving 2.25…

A: Given :  Volume of water = 20.00 ml  Mass of salt = 2.25 gm  Density = 0.997 gm/ml  Tf °= 0°C  Kf =…

Q: Given: Mass of unknown = 4.09 Volume of ethanol =20mL Boiling point of pure ethanol =82.3 Celsius…

A: Given:  Mass of unknown = 4.09 gm Volume of ethanol =20mL Boiling point of pure ethanol =82.3 °C…

Q: Calculate the molalities of the following aqueous solutions: (a) 1.21 M sugar (C12H22011) solution…

A: Molality = no. of moles of solute/Mass of solvent (kg) Now, we have to calculate 'no. of moles of…

Q: A solution contains equal amounts (in moles) of liquid components A and B. The vapor pressure of…

A: Since the solution contains equal moles of A and B, hence let the no. of moles of each component be…

Q: Consider an aqueous solution containing 1.0 g/L of a protein (molar mass = 9.7 x 10 g/mol) with a…

A: The colligative properties are essentially those physical quantities of a solution that depend on…

Q: Complete the table below for the aqueous solution of caffeine Molality Mass percent solvent Ppm…

A:

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: Calculate the molalities of the following aqueous solutions: (a) 1.000 M sugar (C12H22O11) solution…

A: The molality of a solution is calculated using the below formula.

Q: A solution is prepared by dissolving 27.7 g of urea [(NH₂)₂CO], in 147.0 g of water. Calculate the…

A: Boiling point is the temperature at which substance start converting from liquid to vapour form

Q: At 300°K, the vapor pressure of pure benzene (C6H6) is 0.1355 atm and the vapor pressure of pure…

A: