A polymer of large molar mass is dissolved in the organic solvent tetrahydrofuran (C4H8O) at 25...

A polymer of large molar mass is dissolved in the organic solvent tetrahydrofuran (C₄H₈O) at 25 °C, and the resulting solution rises to a final height of 19.3 cm above the level of the pure solvent, as solvent molecules pass through a semipermeable membrane into the solution. If the solution contains 5.23 g polymer per liter, calculate the molar mass of the polymer. Take the density of the solution to be 0.886 g cm^-3.

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queen_honey_blossom answered 2 years ago

Calculate the mole fraction of A if 25g of it is dissolved in 50 moles of B. Given the molar mass of A is 25 g/mole.

Calculate the mole fraction of A if 25 gm of it is dissolved in 50 moles of B. Given the molar mass of A is 25 gm/mole.

1. A solution that has a relatively large quantity of solute dissolved in the solvent in:

1. A solution that has a relatively large quantity of solute dissolved in the solvent in: a) Homogenous b) Dilute c) Concentrated d) Saturated 2. The concentration of flouride ions in municipal drinking water cannot exceed 1.5 ppm. What is the maximum mass of flouride ions that can be dissolved in 500 mL of water? a) 3.0 mg b) 0.003 mg c) 750 mg d) 1.5 mg e) 0.75 mg 3. As the temperature of a solution increases, the solubility...

1. A solution that has a relatively large quantity of solute dissolved in the solvent in:

1. A solution that has a relatively large quantity of solute dissolved in the solvent in: a) Homogenous b) Dilute c) Concentrated d) Saturated 2. The concentration of flouride ions in municipal drinking water cannot exceed 1.5 ppm. What is the maximum mass of flouride ions that can be dissolved in 500 mL of water? a) 3.0 mg b) 0.003 mg c) 750 mg d) 1.5 mg e) 0.75 mg 3. As the temperature of a solution increases, the solubility...

The vapor pressure of an organic solvent is 50mmHg at 25 C and 200mmHg at 45...

The vapor pressure of an organic solvent is 50mmHg at 25 C and 200mmHg at 45 C. The solvent is the only species in a closed flask at 35 C and is present in both liquid and vapor states. The volume of gas above the liquid is 150 mL. a) Estimate the amount of the solvent (mol) contained in the gas phase. b) What assumptions did you make? How would you answer change if the species dimerized (one molecule results...

A mass of 14.22g of (NH4)2SO4 (molar mass = 132.06g/mol) is dissolved in water. After the...

A mass of 14.22g of (NH4)2SO4 (molar mass = 132.06g/mol) is dissolved in water. After the solution is heated, 30.19g of Al2(SO4)3•18H2O (molar mass = 666.36g/mol) is added. calculate the theoretical yield of the resulting alum. Hint: This is a limiting reactant problem.

20.26 grams of unknown 1 (with molar mass 203.67 g/mol) was dissolved in 182.7 mL of...

20.26 grams of unknown 1 (with molar mass 203.67 g/mol) was dissolved in 182.7 mL of ethylene glycol in a calorimeter. What change in temperature would the solution experience as a result of this dissolution? Assume the solution has the same specific heat capacity as pure ethylene glycol. The density of ethylene glycol is 1.11 g/cm3. The ∆Hdissolution for unknown 2 is 124.1 kJ/mol unknown 1.

How many g of MgCl2 (molar mass = 95.21 g/mol) have to be dissolved to give...

How many g of MgCl2 (molar mass = 95.21 g/mol) have to be dissolved to give 100 g of an aqueous solution that boils at 101.50 degree C? A) 279g B) 27.9g C) 95.2g D) 93.0g E) 9.30g

A 0.1276−g sample of a monoprotic acid (molar mass = 1.10 × 102 g/mol) was dissolved...

A 0.1276−g sample of a monoprotic acid (molar mass = 1.10 × 102 g/mol) was dissolved in 25.0 mL of water and titrated with 0.0633 M NaOH. After 10.0 mL of base had been added, the pH was determined to be 4.87. What is the Ka for the acid? Answer in scientific notation.

Context: Performed boiling point elevation lab to determine molar mass of solute dissolved in pure ethanol...

Context: Performed boiling point elevation lab to determine molar mass of solute dissolved in pure ethanol (solute was urea): Question: In regards to intermolecular forces, why is is the assumption that the solute is a nonelectrolyte valid here? What types of intermolecular fires are present in the solvent? For what types of solutes and in which solvent would the van't Hoff factor be larger than 1? The only one that I think I know is the last part - electrolytes...

Determine the molarity when 12.9 grams of ethanol, C2H5OH (Molar mass = 46.08 g/mol) is dissolved...

Determine the molarity when 12.9 grams of ethanol, C2H5OH (Molar mass = 46.08 g/mol) is dissolved in 248.8-mL of solution. Answer to 2 decimal places. Determine the molality when 4.93 moles of ethanol are dissolved in 0.489 kg of water. Answer to 2 decimal places. Determine the molality of a solution when 43.4 grams of ethanol, C2H5OH (Molar mass = 46.08 g/mol) is dissolved in 0.189 kg of water. Answer to 2 decimal places. Determine the molality when 24.3 grams...

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A polymer of large molar mass is dissolved in the organic solvent tetrahydrofuran (C4H8O) at 25...

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Calculate the mole fraction of A if 25g of it is dissolved in 50 moles of B. Given the molar mass of A is 25 g/mole.

1. A solution that has a relatively large quantity of solute dissolved in the solvent in:

1. A solution that has a relatively large quantity of solute dissolved in the solvent in:

The vapor pressure of an organic solvent is 50mmHg at 25 C and 200mmHg at 45...

A mass of 14.22g of (NH4)2SO4 (molar mass = 132.06g/mol) is dissolved in water. After the...

20.26 grams of unknown 1 (with molar mass 203.67 g/mol) was dissolved in 182.7 mL of...

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