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…

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter13: Titrations In Analytical Chemistry

Section: Chapter Questions

Problem 13.11QAP

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Give good explanation part b) What pressure is required to achieve a CO2 concentration of 9. 80×10-2 M at 20 degrees.
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

(12) At a given temperature the vapor pressures of benzene and toluene are 183 mm Hg and 59.2 mm Hg, respectively. Calculate the total vapor pressure over a solution of benzene and toluene with Xbenzene = 0.580. A) 106 mm Hg B) 121 mm Hg C) 131 mm Hg D) 242 mm Hg E) 262 mm Hg
Not Secure - gmc.mrooms3.net nglish - United States (en_us) Calculate the molality of a solution that is prepared by mixing 25.5 mL of CH3OH (d = 0.792 g/mL) and 387 %3D mL of CH3CH2CH2OH (d = 0.811 g/mL). %3D Select one: a. 0.630 m b. 0.812 m c. 1.57 m d. 2.01 m e. 4.98 m Consider the following reaction:
A sample of 2.05 g of polystyrene of uniform polymer chain length was dissolved in enough toluene to form 0.100 L of solution. The osmotic pressure of this solution was found to be 1.21 kPa at 25°C. Calculate the molar mass of the polystyrene. 8 - a) 2.35 x 10 g/mol b) 4.20x 10 g/mol 3.05 x 10 g/mo 4.20x 103 g/mol 4.20 x 10 g/mol Boş bırak KÖnceki 8/20 Sonraki> Карat
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In a laboratory experiment, students synthesized a new compound and found that when 14.95 grams of the compound were dissolved to make 290.0 mL of a ethanol solution, the osmotic pressure generated was 1.41 atm at 298 K. The compound was also found to be nonvolatile and a non-electrolyte. What is the molar mass they determined for this compound? g/mol Submit Answer Retry Entire Group 9 more group attempts remaining Cengage Learning Cengage Technical Support que MacBook Air Previous Next Save and Exit
Which of the following compounds is most soluble in water? Hint: you need to solve for [x] and then decide. BaSO4 Ksp = 1.98x10-10 Fe(OH)2 Ksp = 1.64x10-14 Ag3PO4 Ksp = 1.2x10-15
a) Which salt has minimum solubility at40°C? 200 100 KNO 160 170 160 b) At what temperature solubility of KCI is 50g in 100g of water? 150 140 130 120 110 100 e) How much KCI will dissolve in 125g of water at 10'C? 70 KCH 40 30 Naci d) If 70g of KNO, is dissolved in 100g of water At 50'C, find whether solution is saturated, 20 10 O 20 40 60 o 100 Temperature ("C) unsaturated or supersaturated? Figure 18 Relationship belween solute solubility in water and temperature Grams of solute dssolved in 100 g of water
Q 21 and 22 please
(Q71) The osmotic pressure of a solution containing 24.1 mg of an unknown protein dissolved in 8.57 mL of solution is 2.08 torr at 37°C. What is the molar mass (in g/mol) of this unknown protein? (The molar mass of the protein will be relatively high - express to 5 sig figs).

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