Consider a phospholipid vesicle containing 13.0 mM Nat ions. The vesicle is bathed in a solution that contains 50.0 mM Nations, and the electrical potential difference across the vesicle membrane AW= outside inside =-30 mV. inside-30 What is the electrochemical potential at 25.0 °C for Nations? (Faraday's constant=96.49 kJ/V mol.)

A galvanic cell at a temperature of 25.0 °C is powered by the following redox reaction: 2+ 2+ Sn(aq) +Ba(s) → Sn (s) + Ba** (aq) 2+ 2+ Suppose the cell is prepared with 7.71 M Sn in one half-cell and 5.89 MBa in the other. Calculate the cell voltage under these conditions. Round your answer to 3 significant digits.

Estimate the osmotic pressure of a solution of 0.1 M NaCl at 25°C. Assume 100% ionization of solute.

A beaker contains two compartments (A and B) with equal volumes of solution separated by an artificial membrane with a pore size of 24 Angstrom (Å). Explain the net movement of solute if Compartment A has 3% albumin while compartment B has 2% potato starch (albumin diameter = 38 Å; potato starch = 300,000-1000000 Å).

The simple form of |Hoff equation is: II = [B]RT In this equation the [B] is the molar concentration of solute. So: n m [B] = v MV = cg /MA Where c, the mass concentration of the solute is in the total volume of solution and M, is the molar mass of the solute. This equation can be replaced in the previous one to get: RT II = MA In this equation molar mass of given solute can be detemined from the slope of the II vs Cz plot. This equation applies only to solutions that are sufficiently dilute to behave as ideal-dilute solutions. In the case of non-ideal solutions, however, the extended formula is: II = [B]RT{1+ k. [B] + n. [B]² + ...} Biological macromolecules dissolve to produce solutions that are far from ideal, but we can still calculate the osmotic pressure by assuming that the van't Hoff equation is only the first term of a lengthier expression: II [B]RT(1+ b. [B]) II = RT + bRT. [B] [B] II = RT + bRT./M. */Ma п RT ÞRT Ca MA MA In this equation molar mass of given biomolecule can…

V=62 log 10 (C0/Ci ) for a positive ion at 37 degrees Celsius. What is theoretical ratio of solution ion across the membrane when the resting membrane potential is 124 mV?

what is the property of the solution that makes log(concentration) Vs electrochemical potential deviates from linear line at high concentrations?

Considering 200 ml of 0.2 m potassium bromide, answer the following two questions: 64. How many Osmol are present in 1 mol KBr: A) 1. B) 2. 65. How many milliosmolal are presented in the above solution: a. 0.4 d. 80 b. 40 e. 800 mOsm C) 3. c. 0.8

Use the equation of your line to calculate an accurate concentration of solute if the absorbance is 0.15 AU. Show your calculations.

At Electrochemical Equilibrium, which best describes the distribution of ions in the chamber, on either side of the membrane, when one "mole" of salt (NaCl) is added to one side of a 1 liter chamber, filled with water and divided in half by a membrane permeable only to Na+. 2.0 M CI- and 1.25 M Na+ one side of the membrane; 0.75 M Na+ on the other side of the membrane. 1.0 M CI- and 1.0 M Na+ on both sides of the membrane. 2.0 M CI- and 1.0 M Na+ one side of the membrane; 1.0 M Na+ on the other side of the membrane. 2.0 M CI- and 2.0 M Na+ on one side of the membrane; pure water on the other side of the membrane.