2.0 g of an unknown solute (solid) is dissolved in 12.5 g of stearic acid, the solution will freeze at 4.6°C lower than pure stearic acid. The freezing point depression constant for stearic acid is known to be −4.5°C/m. Calculate the following: The molality of the unknown solute. The number of moles of the unknown solute. The molecular weight of the unknown solute.

Q: mass of t-butanol = 7.438 g mass of unknown = 0.342 g freezing temp solution = 22.85 C freezing temp…

A:

Q: The osmotic pressure of a glucose solution is 5 bar when measured against water at 25°C. Calculate…

A: Given,  Osmotic pressure = π = 5 bar  Temperature = T = 25 0C Density of the glucose solution = 1…

Q: Students are investigating a solvent for use in freezing point depression experiments. They measured…

A: Given : Freezing point of solvent = -12.6 oC Freezing point of solution = -18.3 oC Mass of solute…

Q: Calculate the vapor pressure at 25 °C of a solution containing 99.5 g sucrose (C12H22O11) and 300.0…

A: Given,

Q: Calculate the molality of a 0.410 molar aqueous glucose solution whose density is 1.15 g/mol

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Q: What is the boiling point elevation of a 0.055 m glucose in aqueous solution in ⁰C? Freezing point…

A:

Q: Calculate the mole fraction and molality of a solution that contains 0.850 g of ammonia, NH 3,…

A: Given that: Mass of ammonia = 0.850g  Mass of water = 125g  We know : Molar mass of NH3 = 17g/mol…

Q: If through a freezing point depression experiment it was determined that the molality of a solution…

A: mass of Covalent Solid = 7.50 gMass of Solvent = 0.100 kgMolality = 0.122 molalMolar mass of…

Q: alculate the molality of a 0.898 M ethanol (C2H5OHC2H5OH) solution whose density is 0.429 g/ml.

A: Molality(m):It is defined as number of mole of solute dissolved in per  kilogram of solvent.…

Q: Consider an aqueous solution containing 1.0 g/L of a protein (molar mass = 8.4 x 10ʻ g/mol) with a…

A: Given: Temperature, T = 25°C = 298.15 K Mass concentration of the protein = 1.0 g/L Molar mass of…

Q: The freezing point of a 1 molal aqueous solution of the nonelectrolyte ethylene glycol (the…

A: The cracking of engine is prevented by adding ethylene glycol in the automobile radiator which…

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A:

Q: a) The addition of 100 g of a compound to 750 g of CCl4 lowered the freezing point of the solvent by…

A: Since you have posted multiple questions, we will solve only first question for you. Please repost…

Q: Greg needs to determine the freezing point depression of 35 mL of 0.25 m AlCl3  solution. Greg…

A: The correct answer has to be given.

Q: Camphor, C10H16O may be used as a solvent in molar mass determinations by freezing point depression.…

A: 0.556 g of Naphthalene, C10H8  (solute) nsolute = given mass /molar mass = 0.556 g / 128 g/mol =…

Q: The molar mass of an unknown compound must be determined, using a solvent that has a freezing point…

A: The solution freezing point will be decreased due to the availability of the species solute which…

Q: The osmotic pressure of an aqueous solution of a non-ionic solute is 120 kPa at 300 K. Assuming that…

A:

Q: A biochemical engineer isolates a bacterial gene fragment and dissolves a 10.0-mg sample in enough…

A: Mass of bacterial gene fragment = 10 mg  1 mg = 10-3 g  Mass of bacterial gene fragment = (10 ×…

Q: Calculate the freezing temperature of the following solution of 0.50 M sodium chloride (an ionic…

A: Introduction: Depression in Freezing point:                                The phenomenon by which…

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: If the freezing point depression of a 0.110 m solution is 2.33 degrees Celsius, what is the freezing…

A:

Q: When 168 mg of a certain molecular compound X are dissolved in 25.0 g of cyclohexane, the freezing…

A: Solution -

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…

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A: The addition of non volatile solute to the solvent resulting in the decrease in freezing point of…

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A:

Q: Calculate the freezing point of a solution containing 0.600 kg of CHCl3 and 42.0 g of eucalyptol…

A: Given data is as follows: The mass of solvent CHCl3 0.600 kg = 600 g The mass of solute C10H18O =…

Q: An online study examined the lowering of freezing point when 0.222 g of an unknown molecular solute…

A: Mass of in known compound ,m = 0.222g Let the molar mass of compound be M g/mol. Then, number of…

Q: Calculate the normal freezing point of a 0.7439 mol aqueous solution of c12h22o11 that has a density…

A: Given information: Moles = 0.7439 mol Density = 1.35 g/mL Molal freezing point depression constant =…

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: Calculate the molality of the solution formed when 1.5g of urea (molar mass = 60g / mol) is…

A: Given, 1.5g of urea (molar mass = 60g / mol) is dissolved in 200g of benzene

Q: Calculate the freezing-point depression and osmotic pressure in torr at 25°C for an aqueous solution…

A:

Q: Calculate the molality of a 20.0% (by mass) aqueous solution of hydrochloric acid. A. 2.26 m B. 250…

A:

Q: A 12.7 g substance was dissolved in 2.00 g of solvent. The molar mass of the unknown substance is…

A:

Q: Calculate the molality of a solution containing 5 g of the nonelectrolyte glucose (C6H12O6) in 0.400…

A: Molality is the ratio of moles of solute to mass of solvent in kiligram.

Q: Calculate the molarity and the molality of a solution prepared by dissolving 2.00 g of C2H5OH with…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: Calculate the molality of a solution containing 0.125 mol of a non - electrolyte solute dissolved in…

A: Molality is defined as the moles of solute present in 1 kg of the solvent.

Q: Consider an aqueous solution containing 1.0 g/L of a protein (molar mass = 6.2 × 104 g/mol) with a…

A: Molar mass of compound, M = 62000 g /molMass of protein = 1 gVolume of solution = 1 L

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: Which of the following solutions will have the greatest colligative effect? 2 moles of glucose…

A: Firstly, from the given data calculate the concentration of each species. The concentration is…

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A: Solution                            Given that  Mole fraction of potassium nitrite = 0.0194…

Q: The density of a 0.438 M solution of potassium chromate (K2CrO4) at 298 K is 1.063 g/mL. Calculate…

A:

Q: 2. Calculate the normal freezing point of a 0.7439 mol aqueous solution of C12H22O11 that has a…

A: 2) Given, [sucrose] = 0.7439 M                         Density of solution = 1.35 g/ mL # Let the…

Q: A solution is made by dissolving 0.638 molof nonelectrolyte solute in 851g of benzene. Calculate the…

A: This question is from Chapter Solutions and Colligative Properties. Here we will find-  Freezing…

Q: A solution is prepared by dissolving 0.500 g of a polymer in 0.200 L toluene (an organic solvent).…

A: The minimum pressure that is applied to a solution so that the movement of its pure solvent through…

Q: Determine the freezing point depression of a solution that contains 30.7 g glycerin (C 3H 8O 3,…

A: Depression at the Freezing Point: A solution's freezing point is lower than that of the pure…

Q: Calculate the molal concentration of a solution that contains 18 g of sodium hydroxide (NaOH) in 100…

A: Molal concentration =moles of solutemass of solvent = mass of solutemolar mass of solute x mass of…

Q: 3.9 g of benzoic acid dissolved in 49 g of benzene shows a depression in freezing point of 1.62 K.…

A: Given : mass of benzoic acid = 3.9 g Mass of benzene = 49 g = 0.049 Kg…

Q: Calculate the molality of a 25.8% (by mass) aqueous solution of phosphoric acid (H3PO4). A. 348 m…

A: % by mass is defined as the mass percent of the solute present in the solution  Hence % by mass =…

Q: Calculate the freezing point in degree celcius of a solution containing 54.1g of CCl4 (molar mass =…

A:

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.