A 7.08 g sample of an ionic compound XCI2 is dissolved in 383 grams of a solvent. The freezing point of the solution is 1.22°C below that of pure solvent. What is the molar mass of this compound? Kf for solvent 4.36°C/m. Use 3 significant figures in this problem. Do not include the units in your answer.

Q: A 45 g sample of urea (MW = 56.7 g mol-1) (non-dissociating, non-volatile solute) is dissolved into…

A:

Q: 198 g of glucose (C6H12O6) is dissolved in 435 mL of water. Determine 1. Percent by mass 2. Mole…

A: Moles of solute (glucose) = given massmolar mass                               =198180…

Q: Calculate the freezing point of a solution made by dissolving 1.00 mole of NaCl in 1000. g of H2O.

A: We will use formula of ∆Tf. ∆Tf=Tf°-Tf

Q: An aqueous solution contains 20% by mass MgCl2 (MW=95.21 g/mole), if the density is 1.25 g/ml, what…

A: Given data contains, Density = 1.25 g/mL  % by mass = 20%  Kf = 1.86 K/m

Q: Calculate the boiling and freezing points of 0.102 mol/kg aqueous solutions of NaCl and of CaCl2.…

A: Given,  The molality of an aqueous solution of NaCl and of CaCl2 is 0.102 mol/kg. The  Tb(NaCl)…

Q: Define the following terms :(i) Mole fraction (ii) Ideal solution(b) 15.0 g of an unknown molecular…

A: (i) Mole fraction It is defined as the no. of moles of a particular solute or component present in…

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A:

Q: What would be the theoretical freezing point of a solution made by dissolving 3.313 g of KCl in…

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Q: When 20 g of naphthoic acid (C,H,O.) is dissolved in 50 g of benzene (Kf = 1.72 K kg/mol), a…

A: Given : Mass of solute(naphthoic acid) = 20g = 0.02 kg Mass of solvent( benzene) = 50g = 0.05 kg…

Q: An aqueous solution containing 17.5 g of an unknown molecular (nonelectrolyte) compound in 100.0 g…

A: Given information, mass of unknown molecular (nonelectrolyte) compound is 17.5 g mass of water is…

Q: Calculate the molality of a solution prepared by dissolving 15 grams of ethylene glycol (HOCH2CH2OH)…

A: Molality - it is a concentration term in which the number of moles of solutes are dissolved in 1kg…

Q: A glucose solution contains 53.8 g of glucose (molar mass = 180.18 g/mol) in 455 g of water. Given a…

A: Depression in freezing point is given by the relationship: ∆Tf=Kf.m…

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A:

Q: Calculate the molality of a solution prepared by dissolving 15 grams of ethylene glycol (HOCH2CH2OH)…

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Q: 1) A solution containing 10.0 g of an unknown molecular liquid and 90.0 g water has a freezing point…

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Q: When a 33.8-g sample of an unknown compound is dissolved in 500. g of benzene, the freezing point of…

A: Given mass of sample (solute) = 33.8 g mass of benzene (solvent) = 500 g freezing point of solution…

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A: Raoult's law states that solvent's partial vapour pressure in solution is equal to vapour pressure…

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

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A: To calculate:  the mass of NaCl to be dissolved in 37.2 g of water to lower the freezing point by…

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A: The freezing point and boiling point can be calculated by the following formula: ∆Tf=Kf x m ∆Tb=Kb x…

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

A: Solution -

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A: Colligative properties: The colligative properties are those properties of solutions that depend on…

Q: When 634. mg of a certain molecular compound X are dissolved in 60. g of cyclohexane (C,H,2), the…

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Q: When 271. mg of a certain molecular compound X are dissolved in 25.0g of benzene C6H6, the freezing…

A: Given:Mass of molecular compound X=271. mgMass of benzene=25.0 gFreezing point of…

Q: If 3.42 grams of a nonpolar molecular compound, dissolved in 41.8 grams benzene, begins to freeze at…

A:

Q: You are a forensic chemist and vou are given a white powder to analyze. You take a 0.25- g sample of…

A: Given that 0.25 g of a sample is dissolved in 4.0 g of a benzene.Freezing point of the solution is…

Q: When a 28.4 g sample of an unknown compound is dissolved in 500.0 g of benzene ( C6H6 ) , the…

A: Mass of sample = 28.4 g. Mass of benzene ( C6H6 ) = 500.0 g freezing point of solution = 3.77 °C…

Q: a) What is the freezing point depression caused by adding NaCl to the water? b) The freezing point…

A: Concept introduction: When a non-volatile solute is added to a pure solvent freezing point of the…

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A: NOTE : the constant given 5.12 °C m¯1 is Kf of benzene and not Kb Since the depression in freezing…

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A:

Q: 2. A student was required to make a solution of camphor and naphthalene that had a freezing point of…

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Q: What is the freezing point of an aqueous calcium sulfate solution prepared by mixing 45.0 g of…

A: The freezing point of a solution is always less than that of the pure solvent. The freezing point…

Q: Calculate the mass of compound (molar mass = 256 g mol-1) to be dissolved in 75 g of benzene to…

A: A colligative property is a property that depends on the number of moles of solute, not on the…

Q: Which substance of the following will dissolve in 100 g of water to show the greatest freezing point…

A: The freezing point is the temperature at which the solution freezes. The freezing point of the pure…

Q: Calculate the vapor pressure at 25 °C of a solution containing 55.3 g ethylene glycol (HOCH2CH2OH)…

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A: Given: Mass of mixture (glucose + NaCl) =30.0 g Let mass of glucose be ‘x’ and mass of Nacl be ‘y’…

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Q: Calculate Boiling Point Elavation anf Freezing Point Depression Ethylene glycol (EG), C2H6O2 , is a…

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Q: For each case,compute the vapor pressure of the solution at 25°C. The vapor pressure of pure water…

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A: The required relationship is given below.

Q: Calculate the molarity of a solution that contains 126.8 g NaCl in 2.800 L of water.

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

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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.