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.

To calculate cell voltage of galvanic cell under given conditions , we need to use Nernst…

Answered: A galvanic cell at a temperature of…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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You are asked to prepare HEPES buffered saline with the following constituents: НЕРES 10mM KCI 5mM NaCl 135mM CaCl2 1mM M9SO4 0.6mM Glucose 6mM You have previously made up 100 mM stock solutions of HEPES, KCI, CaCl2, and M9SO4 and a 1M stock of NaCl. The MW of glucose is 180.16 g/mol What volume of HEPES would you require to make up 400ml of buffer?
5) In an experiment to investigate the inhibition of the enzyme-glucosidase the following data for the rates of reaction with glucopyranoside for various substrate concentrations was obtained. By constructing a Leaver-Burk plot, determine the value of the Michaelis constant. [S]/ (10-6 mol dm-3) v/ (10-3 mol dm-3 s-1) 1.00 2.00 3.00 4.00 16.7 33.3 41.1 49.8
The Ksp values of silver chromate Ag2CrO4 and silver iodate Ag(IO3) are given below. Ag2CrO4 Ag(IO3) Ksp 1.12 x 10-12 3.17 x 10-8 Based on these Ksp values, which of the following is true? Choose one option only. Options: a. In the solution consisting of 1.00 x10-4 M Ag+ and 5.00 x10-5 M CrO42-, Ag2CrO4 precipitate will form. b. In the solution consisting of 1.0 x10-4 M Ag+ and 1.0 x10-4 M IO3-, Ag(IO3) precipitate will form. c. In pure water, the solubility of Ag2CrO4 is lower than the solubility of Ag(IO3). d. In the solution consisting of 0.200 M CrO42- and 0.200 M IO3-, Ag2(CrO4) will precipitate first if we add Ag+ ions gradually into the above mixture.
Mike has determined that enzyme he is attempting to purify has an isoelectric point of 4.5 (pI = 4.5). He has decided to examine anion exchange chromatography as a potential purification step. He tested out using 2 different buffer and linear NaCl gradient on HPLC (like what you did). His results are shown below. Which buffer should Mike uses for his purification (both buffer has pH higher than enzyme’s pI)? Why?
A 100.0 mL sample of 0.200 M aqueous hydrochloric acid is added to 100.0 ml of 0.200 M aqueous ammonia in a calorimeter whose heat capacity (excluding any water) is 480.0 J/K. The following reaction occurs when the two solutions are mixed. HCl(aq)+NH,(aq)—NH_Cl(aq) The temperature increase is 2.34 °C. Calculate AH per mole of HCI and NH, reacted. Select one: о a. -1.96 KJ/mol b. 154 KJ/mol O c. 485 KJ/mol d. 1.96 KJ/mol Jm e. -154 J/mol
Consider the following equilibrium at 298 K. R = 8.314 J/K-mol Citrate Isocitrate Using the equilibrium concentrations of [Citrate] = 2.15 M and [Isocitrate] = 0.00825 M, calculate K'g, then AG°. Which one of the following is the correct value for AG in units of kJ/mol? 5990 kJ/mol -2480 kJ/mol 2.48 kJ/mol 13.8 kJ/mol 5.99 kJ/mol -2.48 kJ/mol -5990 kJ/mol -9.99 kJ/mol -13800 kJ/mol 13800 kJ/mol -5.99 kJ/mol 9.99 kJ/mol 2480 kJ/mol 9990 kJ/mol -13.8 kJ/mol -9990 kJ/mol O O O O O O O O O O0000 O O
Given that the AG" values for the hydrolysis of glucose 1-phosphate and glucose 6-phosphate are approximately -21 kJ/mol and –14 kJ/mol, respectively, which statement is true regarding the isomerization shown? glucose 1-phosphate → glucose 6-phosphate O The reaction can likely proceed in either direction and will therefore depend on the concentrations of glucose 1-phosphate and glucose 6-phosphate. O Only the anabolic direction will occur because the free energy change is positive. O The reaction will proceed in both directions simultaneously. This reaction can only proceed in one direction and must be the rate limiting reaction for this point in metabolism.
For the reversible, liquid-phase reaction A ↔ B, determine the adiabatic equilibrium temperature and conversion when pure A is fed to the reactor at 300 K. CPA = CPB = 50 cal mol‍¹ K-¹. Heat capacities are independent of temperature. The equilibrium constant is 1.0 × 105 at 298 K; the heat of reaction is -2.0 × 10 cal/mol.
A purified protein sample was used in a reaction, resulting in an activity of 696.7 nmol min-1. The reaction volume was 145.0 µL and the final volume before loading the plate was 1,050 µL. The total reaction time was 4.25 min. The amount of protein used in the reaction was 4.270 µg. Calculate the specific activity of the sample (in nmol min-1 µg-1).
A 2.0% (by mass) aqueous solution of novocainium chloride (C13 H21 CIN2O2) freezes at -0.235 °C. a Calculate the van't Hoff factor, i. - Kp (H2O) = -1.86 °C/m. i = b How many moles of ions are in the solution per mole of compound? mol ions
Highlight your values of A,B,C and D. For your question: A mL of B mol/L sodium phosphate solution is combined with C mL of D mol/L calcium bicarbonate. (Calcium bicarbonate is soluble.) A mL B mol/L C mL D mol/L 75.0 ml 0.300 67.5 0.350 Before you begin your reaction, you must accurately produce 1.500 L of your sodium phosphate solution from sodium phosphate trihydrate solid. Write out a procedure to explain all the steps you will take in the lab when making the solution to ensure that your solution concentration is accurate. Please include calculations that show the required mass of solid. Also include the correct names of all equipment used.
Use the appropriate equation to calculate the free energy change for the movement of Nat into the depolarized nerve cell where the membrane potential is +50mV and the Nain/Naout ratio is 7.3/1. Assume the temperature is 37°C. Stop! For full credit: 1. Enter your answer in kJ, kilojoules. 2. Do not put units in the box. 3. Round your answer to the nearest tenth. If your calculator permits, do not round until the end for the sake of continuity. 4. If your answer is negative, include the sign and number with no space.

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