3. To determine the molar mass of a certain protein, 1.00 x 10-3 g of it was dissolved in enough water to make 1.00mL of solution. The osmotic pressure of this solution was found to be 1.12 torr at 25.0 °C. Calculate the molar mass of protein.

Q: Calculate the molality of a sulfuric acid solution (density = 1.230 g/mL) whose concentration is…

A: molarity is defined as defined as no of moles of solute devided by volume of solution in liter.

Q: What is the molality of a 60.5% by mass of nitric acid (HNO 3 ) solution

A: The concentration of a substance can be measured in terms of mass by mass percentage. This…

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: Calculate the molality of chloride ions in an aqueous solution of magnesium chloride in which the…

A: To solve this problem we will use the formula of molality

Q: Why do some physical properties of solutions depend only on the concentration of the solute and not…

A: The dilute solutions have the physical properties based on number of particles called colligative…

Q: Explain how hydrophilic and hydrophobic colloids can be stabilized in water?

A: Dear student I have given answer to your question in the image format.

Q: Determine the molality of an aqueous solution prepared by dissolving 0.112 moles of LiCl in 13.7…

A:

Q: Maltose, C12H22O11, is a sugar produced by malting (sprouting) grain. A solution of maltose at 25°C…

A: Since the osmotic pressure is given by  Osmotic pressure = i X CRT where i = Van't Hoff factor =1…

Q: Describe a method for purifying colloidal solutions.

A: Dialysis is the process which is used for the separation of colloidal solutions by filtration or…

Q: Define the term colloidal dispersions?

A: When particles are randomly distributed in a substance or medium then it means the particles are…

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

A:

Q: 6. The molality of an aqueous solution of sugar (CHO:1) is 1.75m. Calculate the mole fractions of…

A: mole fraction represent the ratio of mole of one substance to the mole of total substance. It is a…

Q: What is the molality of a solution made by dissolving 49.4 grams of (NH 4) 2SO 4 in 775 grams of…

A:

Q: Calculate the molality of saturated aqueous sodium chloride (58.443 g/mol). A saturated solution…

A: The molality of the solution is defined as the ratio of no of moles of solute to that of mass of…

Q: A sample of an unknown protein dissolved in water to give 25.0 mL of solution was found to have an…

A: Given : Volume of solution = 25.0 mL = 0.0250 L                                           (since 1 L…

Q: Why do colloids exhibit the Tyndall effect but solutions do not?

A: A solution can be defined as the mixture of solute with solvent. Here solute is the substance in…

Q: These following things are colloid properties, except- a) Composed of 2 phases b) stable c)…

A: as per my assumption it is option- C Homogenous as Colloid is of heterogenous nature not homogenous…

Q: What is the molality of a solution of 2.50 g sodium phosphate dissolved in 230g water?

A: Moles of solute ( Na3PO4 ) = 2.50164=0.015244 mol  Mass of solvent ( water ) = 230 g = 0.230 kg…

Q: Molality (m) is defined as moles of solute per _____ of _____.     kg; solution     L; solution…

A: There are various concentration terms for solution :-  Molarity  Normality  Mole fraction  %w/w…

Q: What is the molality of an aqueous 2.39 M C6H12O6 solution. The density of the solution is 1.16 g/mL

A: Given,  Molarity of solution= 2.39 M Density of solution= 1.16 g/ml We need to calculate the…

Q: Calculate the freezing point of a 2.6 m aqueous sucrose solution

A: The freezing point of the given sucrose solution can be determined as follows, ΔTf = kf x m ΔTf =…

Q: What is the molality of a 1.10 M NaF solution with a density of 1.23 g/mL?     1.10 m      5.85…

A: The mole of solute present in one kilogram of the solvent is known as molality. The mole of solute…

Q: when 5.0g of an unknown substance is dissolved in 100.0g of water, the freezing point of the…

A:

Q: Why startch solution easily dissolve in water with regards to the topic of colloidal dispersion?

A:

Q: How will the solubility of NaCl in water be affected by an increase in pressure?

A: Solubility is the amount of solute that gets dissolved in a given amount of solvent at a particular…

Q: 2.00 g of an unknown protein was dissolved in water to make 0.100 L of solution. An osmotic pressure…

A:

Q: Convert the concentration of a. 5% (w/v) NaOH solution and b. 10% (w/v) sucrose solution into I.…

A:

Q: What is the Tyndall effect, and how can it be used to help identify colloidal dispersions?

A:

Q: A solution of H2SO4 with a molal concentration of 8.010 m has a density of 1.354 g/mL. What is the…

A: Given, A solution of H2SO4 with a molal concentration of 8.010 m has a density of 1.354 g/mL. The…

Q: The solubility of ethanol, CH 3 CH 2 OH, in water is greater than the solubility of propane, CH 3 CH…

A:

Q: What is the molality of a solution made by dissolving 19.9 grams of NH 4Br in 910 grams of water?…

A: Given mass of NH4Br = 19.9 g  Given mass of H2O = 910 g  Here , solute is NH4Br and solvent is H2O.…

Q: When 0.713 grams of a protein were dissolved in 72.5 mL of solution at 28.5 degrees C, the osmotic…

A: Osmotic pressure is an colligative property meaning it depends upon the amount of solute or ions…

Q: Explain the difference between Crystalloid and Colloid Solutions

A: We have to differentiate between Crystalloid and Colloid Solutions.

Q: Differentiate between molecular solutions, colloidal dispersions, and coarse dispersions.

A: Molecular solutions, colloidal dispersions, and coarse dispersion can be differentiate by…

Q: . Calculate the molar mass of catalase.

A: Formula of osmotic pressure :-  π = iCRT.  π is the osmotic presssure  i is the Van't hoff factor  C…

Q: he number of moles of solute in a liter of solution. a. Molal concentration b. Molar concentration…

A: 1. Number of moles of solute present in a litre of solution is called molarity. Correct option is B.…

Q: What is the molality of an aqueous solution of sucrose that is 12.5% sucrose by mass?

A:

Q: Concentration terms such as mass percentage, ppm, mole fraction and molality are independent of…

A: Molarity of a solution is defined as the number of moles of solute dissolved per litre of solution.…

Q: Determine the molality  of a solution in which 26.8 grams of glucose C6H12O6 are dissolved in…

A: Mass of glucose = 26.8 g Mass of water = 981.3 g Molar mass of glucose = 180 gmol-1  1000 g = 1 kg…

Q: In a 55.0g aqueous solution of methanol, CH4O, the mole fraction of methanol is 0.110. What is the…

A: Mole fraction is the ratio of the number of moles of one component to the sum of the moles of total…

Q: 0.02 molal solution of potassium iodide freezes at -0.25OC. What is the percentage dissociation?

A:

Q: What is the difference between a colloidal dispersion and a true solution?

A: Colloidal dispersion is a mixture in which a dispersed substance is finely divided in dispersion…

Q: Explain colloidal dispersion?

A:

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: Differentiate between 1 molar solution and 1 Molal solution

A: Molarity of any solution is defined as the moles of solute present per litre of the solution  i.e…

Q: Determine the molality of a 6.930 wt % aqueous solution of LiCl

A:

Q: Determine the molality of a 25% sodium thiosulfate, Na2S2O3, solution.

A: 25 % Means 25 gm of Na2S2O3 is present in 100 gm of solution  ∴ Wight of solvent = 100-25 = 75gm…

Q: The molality of a potassium fluoride solution is 3.75. Calculate the mole fraction of potassium…

A:

Q: MOLARITY AND MOLALITY Calculate the molality concentration of a solution that contains 52.1 g H2SO3…

A: Moles of solute (H2SO3) =given massmolar mass = 52.182=0.64 mol  Molality = moles of solute…