a. A 202-mL benzene solution containing 2.47 g of the organic polymer has an osmotic pressure of 8.63 mm Hg at 21 OC. Calculate the molar mass of the polymer.  b. The salinity of sea water averages at around 35 ppt. However, the Dead Sea has an average salinity of around 287 ppt. What temperature is necessary to be able to ice skate on Dead Sea if it is assumed that the only salt present is magnesium chloride (MgCl2)? c. How many ions dissociates in MgCl3 which is equivalent to van’t Hoff factor (i)?

Q: I. The freezing point of H20 (8) is higher at sea level than at the top of a mountain. II. The…

A: Statement (i) is not correct, as there are no measurable changes in pressure difference between sea…

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

A:

Q: 1. A solution is prepared by dissolving 12 grams of turmeric powder in 350 grams of water. Calculate…

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Q: The vapor pressure of ethanol and methanol are 44.5 and 88.7 mm Hg, respectively. An ideal solution…

A: According to Raoult's law, the vapor pressure of a substance in the solution is calculated by the…

Q: A solution is made by mixing 141. g of heptane (C,H16) and 106. g of benzene (C,H). Calculate the…

A: The mole fraction of a component is the ratio of no of moles of component present to that of no of…

Q: A solution is prepared by mixing 21.1 g of water, H2O, and 36.1 g of ethanol (i.e., C2H5OH).…

A: The mole fraction is defined as unit of the amount of a constituent, nᵢ divided by the total amount…

Q: 1. Calculate the Theoretical Freezing Point 2. Calculate the Molality

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Q: An aqueous solution contains 5% NACl by mass. Calculate the molality and mole fraction.

A: Interpretation -  To determine the molality and mole fraction of an aqueous solution contains 5%…

Q: he mole fraction (solute and solvent) and molality

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Q: The freezing point and cryoscopic constant of a substance (MM = 84 g/mol) are 6.47oC and 5.12…

A: #(a): Given molar mass of solvent, M = 84 g/mol M = 84 gmol * 1 Kg1000 g = 0.084 Kgmol Freezing…

Q: Experimental data shows the water-alcohol proportion at 60°C Mole fraction of 0.00 0.05 0.27 0.44…

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Q: The increase in the boiling point of a solution is given by the equation: AT = Kmi Where: AT =…

A: Given that : The increase in the boiling point of a solution is given by the equation: ∆T =…

Q: Which observation(s) reflect (s) colligative properties? I. A 0.5 m NaBr solution has higher vapor…

A: The properties which depends on the number of moles of solute are termed as colligative properties.…

Q: A. A solution is prepared by mixing 1.00 gram of ethanol (C2H6O) with 100.0- gram water to give a…

A:

Q: Comment on whether the following statements is true or false and briefly explain the answer    a.…

A: (a) Raoult's law states that the vapor pressure of an ideal solution is directly proportional to the…

Q: Biphenyl, C₁2H10, is a nonvolatile, nonionizing solute that is soluble in benzene, C.H. At 25 °C,…

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Q: Which of the following is true about colligative properties? A. Molarity is used to predict…

A: A.Molarity is used to predict increased boiling point because it is temperature-independent is false…

Q: Determine the mole fraction of CH3OH in a solution prepared by dissolving 36 g of alcohol in 1000g…

A: The mole fraction of any substance is defined as the ratio of the no of moles of that substance to…

Q: Which of the following regarding the vapor pressure of a solution containing  a nonvolatile solute…

A: Raoult’s law is based on ideal behaviour of the solution that mean the force of attraction between…

Q: The expressions for boiling point elevation and freezing point depression apply accurately to dilute…

A: Colligative property

Q: Assuming 100% dissociation, calculate the freezing point (Tf) and boiling point (Tb) of 3.27 m…

A: Given compound is K3PO4 Kf= 1.86 °C/m Kb= 0.512 °C/m

Q: Determine the molar mass of an ionic compound with an ideal van't Hoff factor of 2 using the…

A:

Q: What is the molarity of a protein solution if the osmotic pressure is 6.90 torr and the temperature…

A: Given : Osmotic pressure = 6.90 torr  Temperature = 23.1°C van ’t Hoff factor = 1.00.

Q: e equation used to calculate the change in freezing point (AT) of a substance is AT₁= = Km ere K, is…

A: Molarity is a method of expressing concentration of the solution. It is defined as number of moles…

Q: Which of the following statements regarding solutions and the van't Hoff factor is NOT correct? A.…

A: The van 't Hoff factor is defined as the ratio between the actual concentration of particles…

Q: Calculate the mole fraction of solute and solvent in a 30% aqueous sugar solution (C12H22O11). Note:…

A: Mole fraction: It is defined as the number of moles of solute divided by the sum of moles of solute…

Q: A 35mg sample of a protein is dissolved in 10 ml of water at 25 degree Celsius and an osmotic…

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Q: The vapor pressure of water at 20 °C is 17.5 torr. The vapor pressure of an aqueous solution with a…

A:

Q: An aqueous solution containing 2.50% by mass of nitric acid boils at 100.411degC. Calculate the…

A:

Q: Explain how the deposition of dead plants in a lake affects dissolved oxygen concentration in that…

A: Solution Rapidly moving water, like during a mountain stream or giant watercourse, tends to contain…

Q: Calculate the freezing point of a solution of 5.00 g of diphenyl, C12H10, and 7.50 g of naphthalene,…

A: Depression in freezing point is equal to the product of molality and depression in freezing point…

Q: What is the molality of a solution prepared by mixing C6H6 with CC14. If the solution density is 0.9…

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Q: Choose the aqueous solution that has the highest boiling point. These are all solutions of…

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Q: Assuming ideal behavior, match the aqueous solution that will have the following boiling points.…

A: Boiling point of any solution is given by, => boiling point of solution = boiling point of…

Q: The density of water is very close to 1.00 g/mL. If 3.00 moles of ethanol (molar mass 46 g/mol) is…

A: moles of ethanol = 3 mole Mass of water = 1000 g = 1 kg

Q: 100 g of 30% by mass water-acetone (C3H,O) solution is at 35°C. Vapor pressure of water at 35°C is…

A:

Q: Solute particles influence the properties of a solution. What is NOT assumed when understanding…

A: Colligative properties are the properties of solution which is guided by the number of solute…

Q: A solution of 5.00 grams of an unknown compound is dissolved in 0.100 kg of benzene freezes at 4.1…

A: The freezing point depression constant (KFP) for benzene = -5.12 °C/molal The freezing point of pure…

Q: At a certain temperature the vapor pressure of pure acetyl bromide (CH,COBR) is measured to be 0.54…

A:

Q: 2. A and B liquids form ideal solutions. At the boiling point of solution consists of 0.2 mole B and…

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.