7. The sedimentation and diffusion coefficients for myoglobin in dilute aqueous solution at 20°C are2.04 x 10-13 s and 1.13 x 10-10 m²s¹, respectively. The partial specific volume of the protein is 0.741cm3g-1, the density of the solution is 1.00 x 10-3 gcm³ and the coefficient of viscosity of thesolution is 1.00 × 103 kgm 1s¹. Calculate (a) the relative molecular mass and (b) the frictional ratioof this protein. What is the probable shape of a dissolved myoglobin molecule?Un

Let's break down the problem step by step:Relative Molecular Mass (Mr): We can use the Svedberg…

Answered: 7. The sedimentation and diffusion…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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The Gibbs energy of mixing of a regular solution of components A and B is given by Greal = nRT (x Inx +x Inx +ẞXX), where X and X are mix A B B A B the mole fractions of the two components and ẞ is a dimensionless parameter quantifying deviations from ideal behaviour in terms of the relative strength of A-B interactions compared to A-A and B-B interactions. (i) Use a spreadsheet to calculate A Greal/nRT for XA = 0.01, 0.125, mix 0.25, 0.5, 0.75, 0.875 and 0.99 for ẞ= 0, 1 and 3. Report your calculations in a table and, using a labelled plot, determine the numbers of minima in A Greal/nRT as a function of composition and ẞ. mix [3 (ii) For each value of ẞ, predict the number of liquid phases which you would expect for the mixture. Justify your answer in terms of A-B interactions. [
A student performed the fractional distillation of a cyclohexane/toluene mixture. The refractive index of the distillate was measured at 1.4301 with an ambient temperature of 22.0oC. What is the mole percentage of cyclohexane (to 3 sf)?
The limiting molar conductivities of KCl, KNO3 and AgNO3 are 14.99, 14.50 and 13.34 mS-m2/mol, respectively (all at 25 °C). What is the limiting molar conductivity of AgCl at this temperature?
As6
A solution containing 30 g of non-volatile solute exactly in 90 g of water has a vapour pressure of 2.8 kPa at 298 K. Further 18 g of water is added to this solution. The new vapour pressure becomes 2.9 kPa at 298 K. Calculate:(i) the molecular mass of solute and(ii) vapour pressure of water at 298 K.
True or False According to Kolrausch’s law of independent ionic migration, the molar conductivity of an electrolyte is equal to the sum of the molar conductivity of its constituent ions.
(a) Water supplies are often treated with chlorine as one of the processing steps in treating wastewater. Estimate the liquid diffusion coefficient of chlorine in an infinitely dilute solution of water at 289 K using the Wilke-Chang equation. (b) Estimate the liquid diffusivity of the following solutes that are transferred through dilute solutions: (i) oxygen in water at 18ºC; (ii) CO2 in water at 25ºC.
The molar conductivity at infinite dilution of hydrobromic acid, sodium acetate, & sodium bromide at 298 K are 520.1 Scm2mol-1, 105.9 Scm2mol" 1, and 186.3 Scm?mol-1, respectively. Determine the molar conductivity at infinite dilution of acetic acid.
At 25°C the equivalent conductivities of dilute NaI solutions are as following:Find Λ° of NaI at 25°C
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Estimate the filtration flow (cm³/sec) of pure water across a membrane with a total surface area of 900 cm². The viscosity of water is 1 cP. The pores in the membrane are rectangular slits with a slit opening of 0.55 micrometers. The porosity of the membrane is 20% and the membrane thickness is 0.095 cm. The pores are also tortuous with a tortuosity of 1.25. The pressure drop across the membrane which drives the filtration flow is 2500 mmHg.
Tooth enamel consists mainly of the mineral calcium hydroxyapatite, Can(PO)(OH). Trace elements in teeth of archeological specimens provide anthropologists with clues about diet and disease of ancient people. Students at Hamline University measured the trace element strontium in cnamel from extract wisdom teeth by atomic absorption spectroscopy. Solutions were prepared with a constant total volume of 10.0mL. containing 0.750mg dissolved tooth enamel plus variable concentration of added Sr. \table[[Added Sr (ng/mL- ppb), Signal (arbitrary units)], [0, 28.0], [2.50, 34.3], [5.00, 42.8], [7.50, 51.5], [10.00, 58.6]] a) Prepare a graph to find the concentration of Sr in the 10mL sample solution in part per billion = n m L. (2%) b) Find the concentration of Sr in tooth enamel in part per million = μ (3%) 5. Tooth enamel consists mainly of the mineral calcium hydroxyapatite, Ca(PO)(OH). Trace elements in teeth of archeological specimens provide anthropologists with clues about diet and…

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