A polymer of large molar mass is dissolved in the organic solvent dimethylformamide (C3H7NO) at 25 °C, and the resulting solution rises to a final height of 10.8 cm above the level of the pure solvent, as solvent molecules pass through a semipermeable membrane into the solution. If the solution contains 3.80 g polymer per liter, calculate the molar mass of the polymer. Take the density of the solution to be 0.944 g cm-³. Molar mass polymer = g mol-1

Q: The vapor pressure of an ideal aqueous glucose, C6H12O6, solution at 37 deg C is 10.4 torr. Compute…

A: We know that , Mole fraction of A = No of moles of A / Total number of mole present in that system.…

Q: K,= 2.57 °C kg mol for a certain subs 20 colution freezes at 5.7 °C. Calculate the freezing point of…

A: At freezing point of liquid there exists equilibrium between solid particles and solvent phase.…

Q: Calculate the molality of a sucrose solution made by dissolving 39.5 grams sucrose into 99.6 grams…

A:

Q: calculate the molar mass of the polymer. Take the density of the solution to be 0.886 g cm

A: Organic solvent  tetrahydrofuran (C4H8O) The osmotic pressure () can be calculated from the…

Q: 190 moles of ethylene glycol is added to 437 moles of water at room temperature. The vapor pressure…

A:

Q: When 14.3 g of a certain molecular compound X are dissolved in  85.0 g of benzene C6H6, the…

A: The equation for depression in freezing point is given below.

Q: The vapor pressure of pure THF at 20 °C is 0.1651 atm. When 10 g of an unknown non-volatile…

A: According to Raoult's law - When a non volatile solute is added into a pure solvent than the vapour…

Q: The normal boiling point of a certain liquid X is 133.8 °C, but when 65. g of urea ((NH,),CO) are…

A:

Q: 38.5 grams of copper(iii)sulfate is mixed in 140 ml of water. Calculate the molal concentration of…

A: Given; Mass of solute=38.5g Volume of the solution=140ml Formula: Molarity=moles of solutevolume of…

Q: A 1.50 kg solution of NaOCl (aq) contains 2.98 mass percent of NaOCl. Calculate the mass of NaOCl in…

A: Given, mass of NaOCl solution = 1.50 Kg = 1.50 × 1000 g = 1500 g Mass percent of NaOCl = 2.98 % Mass…

Q: 1. The solubility of L-glutamic acid (an amino acid) in water has been determined to be as follows…

A: Solubility:   When the maximum amount of solute is dissolve in the solvent is called solubility. On…

Q: The vapor pressure of pure benzene at 25 °C is 0.1252 atm. When 10 g of an unknown non-volatile…

A: Raoult’s law states that a solvent’s partial vapour pressure in a solution (or mixture) is equal or…

Q: A chemistry student is given 2.00 L of a clear aqueous solution at 42. C. He is told an unknown…

A: Given: Ti = 42°C ;      Tf = 22°CAqueous solution = 2.00 LAmount of X obtained = 0.400 kg Yes,…

Q: The freezing point of 50.40 g of a pure solvent is measured to be 47.46 ºC. When 2.10 g of an…

A:

Q: When 274. mg of a certain molecular compound X are dissolved in 100g of formamidethe freezing point…

A:

Q: Calculate the molality of the solution.

A: If x mol of solute is present in 1000 gm solvent then the solution is said to be x molal and it can…

Q: A solution of 5.00 g acetic acid in 100 g benzene freezes at 3.380C. A solution of 5.00 g acetic…

A:

Q: When 541. mg of a certain molecular compound X are dissolved in 75. g of dibenzyl ether…

A: Here we are required to find the molar mass

Q: A solution contains 3.95 g of carbon disulfide (CS2) and 2.43 g of acetone (CH3COCH3). At 35 °C the…

A: The mole fraction of carbon disulphide is calculated as shown below.

Q: Use Henry’s law to calculate equilibriumsolubility values for gases.

A: The behavior of gases is determined by the gas laws.

Q: At 20 °C, the vapor pressure of benzene 1C6H62 is 75 torr, and that of toluene 1C7H82 is 22 torr.…

A: The composition of the mole fraction has to be calculated. Given: The vapor pressure of benzene…

Q: Calculate the vapor pressure of water  over the resulting solution when 45.8 g sugar (mw=342.296…

A: Density of water = 1 g/ml So, mass of water = volume x density = 150 ml x 1 g/ml =150 g Number of…

Q: Suppose the freezing point of a solution of 2.00 g of an unknown molecular substance in 10.00 g of…

A: We know, depression in freezing point is given by  ∆Tf=Kf×mwhere ∆Tf=depression in…

Q: 555. The vappr pressure of a solution containing 13 g of a nonvolatile solution in 100 g of water at…

A: Calculation

Q: The freezing point of 48.06 g of a pure solvent is measured to be 45.44 ºC. When 2.04 g of an…

A:

Q: Now suppose, instead, that 10.719 g of a volatile solute is dissolved in 355.0 g of water.This…

A: The number of moles for a given compound or a molecule refers to the ratio of its mass to the…

Q: A researcher dissolved 12.5 mg of a protein in 1.50 mL of water at 5.00 °C. The resulting osmotic…

A:

Q: 5) In order to find the molecular weight of hemoglobin 0.500 g was dissolved in enough water in a…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Match the term with the related statement. Amixture with particles that settle out if undisturbed.…

A: A question to match about colloidal properties, which is to be accomplished.

Q: Suppose that 8.992 g of a volatile solute is dissolved in 240.0 g of water. The solute also does not…

A: Mass of solute = 8.992 g Let mol. Mass of solute = m Mass of water (solvent) = 240 g Vapour pressure…

Q: Osmotic pressure can be very useful for estimating the molecular weights of macromolecules for whom…

A: For part (a): The mass of protein = 1.364 g The molar mass of the protein = 1.78 × 104 g/mol The…

Q: solubility of oz

A:

Q: When 498. mg of a certain molecular compound X are dissolved in 25.0 g of dibenzyl ether…

A: A numerical problem based on properties of liquids. A set of data for depression of freezing point…

Q: Ckated stateement. A mixture with particles that settle out if undisturbed. The visible erratic…

A:

Q: The freezing point of 59.49 g of a pure solvent is measured to be 44.96 ºC. When 2.18 g of an…

A: Freezing point of the liquid is the temperature at which the vapor pressure of the solvent in the…

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

A: The solution is given in below image:

Q: The molal freezing point depression constant =Kf·7.96°C·kgmol−1 for a certain substance X. When…

A: Answer: We will calculate the depression in freezing point using following formula:…

Q: An aqueous potassium chloride, KCl, solution is made by dissolving 0.305 mol KCl in 575.0 g of…

A:

Q: A solution contains 0.154 mol NaCl and 0.957 mol H, C. Calculate the vapor pressure of the solution…

A:

Q: At a given temperature, you have a mixture of ethanol and acetone at 19.5 °C. The vapor pressure of…

A: Given:  Vapour pressure of pure ethanol(P°A) = 42.28 mm Hg  Vapour pressure of pure acetone(P°B) =…

Q: the vapor pressure of this solution

A:

Q: Use Henry’s law to determine the molar solubility of helium at a pressure of 1.0 atm and 25 °C.

A: Given:   Pressure = 1.0 atm. Temperature = 25°C.

Q: The vapor pressure of pure acetone is 185 torr. When 90.1 g of glucose (MW 180.2) dissolves in 7.5…

A:

Q: At a certain temperature the vapor pressure of pure heptane C7H16 is measured to be 178. torr.…

A: The objective of the question is to calculate the vapor pressure of the solution prepared by mixing…

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.