Please correct answer and don't use hand raiting Problem 1. The following data on osmotic pressure are available for a polymer in dioxane(C4H8O2, p=1.035 g cm³) at 298 K:Mass concentration of polymerHeight difference (g = 9.807 m. s²²)c/g-L-¹h/cm3.985.79 8.05 11.401.09 1.76 2.77 4.68Determine the molar mass of the polymer and the osmotic second virial coefficient (30points). Are the net interactions between two polymer chains attractive or repulsive (5point)? Use Excel to make your plot. Submit your plot online (10 points). [Ans: MB=123kg·mol¹, B =12 m³.mol-¹]

The molar mass and second virial coefficient of the polymer.1. Data Analysis and Plotting:We have…

Answered: Problem 1. The following data on…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter13: The Chemistry Of Solutes And Solutions

Section: Chapter Questions

Problem 107QRT

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1-If 5.06 g of KNO3 is dissolved in 10.00 g water at 31 C°, then the solubility of KNO3in water is (а) 50.6 mlb) 0.506 (c) 197.62 (d) 1.98
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Apply algebraic properties, formulas, and relationships to perform operations on real-world problems (e.g., solve for: molality. • Molality is the number of moles of solute dissolved in a kilogram of solvent. molality = moles of solute or molal, m kg of solvent Sample Problem #1: What is the molality of the example sucrose solution? First Step: Known and Unknown Quantities known unknown mass of sucrose = 0.030464 g C12H2201 molality C12H2201 = ? m mass of water = 0.981256 g H,0 Second Step: Formula molality of C12H22O11 = mol of C12H22O1 1 kg of H,0 Third Step: Rearranging, intermediate calculations, and unit conversions No rearranging required. Intermediate calculations: molar mass of C12H2201 = (12 x 12.011 g) + (22 x 1.0079 g) + (11 x 15.9994 g) = 342.299 g # mol C12H2201 = 0.030464 g C12H,O1 x 1 mol C,,H„01 = 0.000089 mol C12H22O1 1 342.299 g C12H2201 Unit conversions: 0.981256 g H,Ox_1.00000 kg_ = 0.000981256 kg H,0 1 1000.00 g Fourth Step: DELL 「田
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ality al, g. on te ew led ed in X= A solution was prepared by dissolving 140.0 g of KCl in 315 g of water. Calculate the mole fraction of KC1. (The formula weight of KCl is 74.6 g/mol. The formula weight of water is 18.0 g/mol.) Express the mole fraction of KCl to two decimal places. View Available Hint(s) Submit 5 ΑΣΦ Part B - Use the definition of molality 001 mol/ka 12 of 33 ? P Pearson Review I Constants I Periodic Table A solution was prepared by dissolving 140.0 g of KCl in 315 g of water. Calculate the molality of KC1. (The formula weight of KCl is 74.6 g/mol. The formula weight of water is 18.0 g/mol.) Express the concentration of KCl in molality to two decimal places. ▸ View Available Hint(s) >
pls answer thank you A mixture of ethanol (C2H5OH) and water has a freezing point of -16° C. (a) what is the molality of the solution? (b) What is the mass of the alcohol present?
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