5.48°C and Kf for benzene is 5.12°C/m. Calculate the molar mass of the unknown com pound. a. 587 g/mol b. 147 g/mol c. 293 g/mol d. 251 g/mol e. 28.7 g/mol

Q: Determine the molal concentration of a sugar solution in water that has a freezing point of –2.1°C.…

A: Given information,    Freezing point = –2.1°C    Value of Kf = 1.86°C/m for water

Q: Determine the molality of a solution formed by dissolving 37.2g of Lil in 500 mL of water. density…

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Q: Lithium chloride (LiCl) has a lattice energy of -834.0 kJ/mol and a heat of hydration of –871.0…

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Q: What mass of H2O is needed to dissolve 5.39 g Na2CrO4 to produce a solution having a molality of…

A: Given:The mass of Na2CrO4 is 5.39 g.  Molality is 0.389 m. The density of the solution is 1 g/mL.…

Q: 30. A concentrated solution of HCl(aq) has the m/m% of 34.0%.  Calculate the molality of  solution.…

A: This is the concept of concentration terms

Q: 26. A solution consists of nitrogen gas dissolved in water. How will the solubility of the nitrogen…

A: The process of dissolution of a gas in water is an exothermic reaction. Since the reaction is…

Q: A solution is 5.0% m/v. What is the mass of the dissolved solid in 2500 ml of the solution? 1.…

A: The percent mass by volume (% m/v) : The mass of Solute dissolved in the 100 of the Solution .   A…

Q: Before you begin a day trip, you inflate the tires on your automobile to a recommended pressure of…

A:

Q: 29 g of KOH is dissolved in 250. mL of water. What is the mass percent of KOH in this solution?…

A: Hence you posted multiple choice questions, I will answer the first three sub questions. (1) mass of…

Q: The boiling point of water is 100.0°C at 1 atmosphere. How many grams of barium acetate (255.4…

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Q: if kf for water is 1.86°C/m, what is the freezing point of an aqueous solution of Sodium chloride…

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Q: Suppose a chemical company produces 3.91 X 103 kg of benzene.  The benzene is put into 14.5 L…

A: Given: Mass of benzene produced = 3.91 X 103 Kg = 3.91 X 106 g.                          (Since 1 Kg…

Q: A solution made by dissolving 0.502 g of an unknown electrolyte in 25.00 g of CCI4. The solution…

A: In the given question, molar mass of unknown electrolyte is to be found. The formula used is :-∆Tb =…

Q: Bicarbonate ion, written HCO3-, is an important component of the buffer system that maintains the…

A: The chemical formula of a compound provides information about the nature of the elements involves…

Q: Consider a solution is prepared by dissolving 34.0 g of NH3 in 500.0 g of water. The density of the…

A:

Q: When 4.08 g of a nonelectrolyte solute is dissolved in water to make 695 mL of solution at 21 °C,…

A: From given data  mass of solute = 4.08 g  volume of solution = 695 mL = 0.695 L T = 21°C = 275.15 K…

Q: 25. What is the molality of a solution of 33.0 g of propanol (CH3CH₂CH2OH) in 152 mL water, if the…

A:

Q: an aqueous solution that is 25.0% H2SO4 by mass has a density of 1 the molarity and molality of this…

A: Given,  25% by mass, 100 g solution contains 25 g H2SO4.  Mass of solvent = 75 g = 0.075 kg Moles of…

Q: A solution is prepared by dissolving 17.75 g sulfuric acid, H2SO4, in enough water to make 100.0 mL…

A: mass of sulfuric acid, H2SO4 = 17.75 gNote: molar mass of sulfuric acid, H2SO4 = 98.079 g/molThe…

Q: What is the molarity of an aqueous solution that is 5.50% by mass oxalic acid (C₂H₂O) and the…

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Q: A 2.0 L aqueous solution contains 0.25 mole of CaCO3. What is the concentration (molality) of the…

A:

Q: If 773 g of water is added to 53 g of a 1.8-m NaCl solution, what is the mass percent of NaCl in the…

A: Formula is  mass percent = ( mass of solute / mass of solution) × 100 mass of solution = mass of…

Q: Which solution will have the highest osmotic pressure?  A. 1.0 M NaCl B. 2.0 M NaCl C. 1.0 M Sugar…

A: Osmotic is a colligative property. The value of colligative properties depends on the number of the…

Q: Calculate the molality of a solution where 144 grams of C6H12O6 were dissolved in 1500 g of water.

A: Concentration determined in different methods Molarity Notmality Molality  Mole fractionl m=w…

Q: Calculate the molality of each of the following aqueous solutions. Part 1 of 2 2.57 M NaCl (density…

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Q: Two beakers each contain 200 mL of water. Into one beaker, a student adds 5.0 g Nal. Into the other,…

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Q: A 0.640 M aqueous solution has a density of 7.89 g/mL. The solute's molecular weight is 257.27…

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Q: Adding 1.00 g of benzene C6H6 (78.1 g/mol) to 80.0 g of an organic solvent lowers the freezing point…

A:

Q: An ammonium sulphate solution with a concentration of 29% (w/v) was prepared. The molar mass of…

A: We have to predict the molar concentration of the solution.

Q: From the following list of aqueous solutions and water: Select the one with the highest boiling…

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Q: Which solution has the lowest freezing point?  A. Pure water B. 1.5 m CaCl2 C. 2.0 m Sucrose…

A: Depression in Freezing Point = i  x  Kf x m i=> van't Hoff factor kf => Molal depression…

Q: At 70 °C, the solubility of an unknown solute is 65.7 g/100.0 g of water. What mass of the solute…

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Q: A 0.25 g sample of an unknown solid is dissolved in 8.85 g of cyclohexane. The change in the…

A: We can calculate the molality of the solute in the solution by using the relation of depression in…

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.