A04_DIFFUSION_Report_Template_2023

kindly help me with this problem thank you 2. The following data are for Xenon adsorption on ZSM5 zeolite. Evaluate the constants from thea) Langmuir and b) Freundlich. Which of the isotherm fit the data best? Explain. P(Torr) 47 136 250 364 473 577 680 mass(g) of ZSM5 zeolite/mole of Xenon 1.8832 0.8977 0.6588 0.5692 0.5255 0.4946 0.4715

1. What is/are the applications of the following adsorption isotherm models and their limitations?  a. Langmuir  b. BET

The global emissions of methane have been estimated to be near 9,390 million metric tons of CO2 equivalent, assuming there is a GWP of 25. Calculate the residence of methane in the atmosphere. If the concentration of methane in the atmosphere is 1.55 ppmv.   Can an expert, please show me how to solve the question above?

(a) Most commercial heterogeneous catalysts are extremelyfinely divided solid materials. Why is particle sizeimportant? (b) What role does adsorption play in the actionof a heterogeneous catalyst?

Relate Graham's Law of Effusion and Diffusion to the cell membrane's semi-permeability. Explain the mechanism how the said law affects the transport within and among the cells. Draw a simple diagram that clearly shows the mechanism.

kindly help me with this problem Thank you!  Subject: Physical Chemistry Instructions: solve as neatly as possible and show complete solution.No rounding-off for your decimals (include all decimals in your calculator in your computation). The following data were obtained for the adsorption of acetone on charcoal from an aqueous solution at 180C. Y (millimoles/g) C (millimoles/liter) 0.208 2.34 0.618 14.65 1.075 41.03 1.5 88.62 2.08 177.69 2.88 268.97 a) Find the constants k and n of the Freundlich equation. b) Find the constants a and b in the Langmuir equation. c) Find the constants k and n in the Temkin isotherm. d) Which of the isotherm fit the data best?

1. What is/are the applications of the following adsorption isotherm models and their limitations?  a. Temkin  b. Freundlich

Using the relation between temperature and diffusion coefficient, if the temperature increases twice calculate the change in the quanity of activation energy and express it graphically.

The adsorption equilibrium isotherm for aqueous phenol solution and activated carbon can be determined from the following data: c kg phenol/m3 solution q kg phenol/kg carbon 0.3220 0.150 0.1170 0.122 0.0390 0.094 0.0061 0.059 0.0011 0.045   Determine the appropriate isotherm for this experimental run

A typical diffusion constant for small molecules in aqueous solution at 25 °C is 6 × 10−9 m2 s−1. If the critical reaction distance is 0.5 nm, what value is expected for the second-order rate constant for a diffusion-controlled reaction?

The volume of O2(g) adsorbed on a surface of 1 g of a silica sample at 5°C is V1=1.4 cm3 at P1=95.1 torr and V2=10.6 cm3 at P2=760 torr. Identify the maximum volume of oxygen, Vm, that can be adsorbed. Consider the Langmuir isotherm model

The average time for which an oxygen atom remains adsorbed to a tungsten surface is 0.36 s at 2548 K and 3.49 s at 2362 K. What is the activation energy for desorption?

In this table the Kr volume adsorbed on an active carbon surface are given, as a function of the pressures, at 193.5 K. a) Does this data fit well to a Langmuir isotherm? If yes, determine vm and b.

Choices for slope: a. -1.35 x 10^4 b. 1.35 x 10^4 c. -1.09 x 10^4 d. 1.09 x 10^4 choices for y intercept: a.  -27.8 b. 27.8 c. 37.4 d. -37.4 choices for pearson: a. -0.962 b. -1000 c. -0.982 activation energy a. 9.06 x 10^4 b. 113 c. 90.65 collision frequency factor A a. 1.15 x 10^12 b. 113 c. 90.65

Michaelis-Menten kinetics are used to describe intracellular reactions. Yet [Eo] [So]. In in vitro batch reactors, the quasi-steady-state hypothesis does not hold for [Es] [So]. Similarly, the rapid equilibrium assumption also will not hold. Rationalize why Michaelis-Menten Kinetics and the quasi-steady-state approximation are still reasonable descriptions of intracellular enzyme reactions.

Give the values of the following: Slope - [Select from 1.35x10^4, -1.09x10^4, 1.09x10^4, -1.35x10^4] y-intercept - [Select from -27.8, 27.8, 37.4, -37.4] Pearson coefficient (R) - [Select from -1.000, -0.962, -0.982] activation energy of this reaction in kJ/mol = [Select from 1.13x10^5, 90.6, 112.51] collision frequency factor A= [Select from 1.82x10^16, 1.54x10^14, 1.15x10^12]

An enzyme-catalyzed reaction is studied in the absence and presence of an inhibitor and the following data was obtained.      [S] in mmoles/L Velocity in mmoles/L/min-1 No inhibitor With inhibitor 1.25 1.72 0.98 1.67 2.04 1.17 2.50 2.63 1.47 5.00 3.33 1.96 10.00 4.17 2.38               Calculate the Km of the enzyme in the reaction without inhibitor ________________________ Km’ of the enzyme in the reaction with inhibitor ________________________ Vmax of the uninhibited reaction ________________________ Vmax’ of the inhibited reaction ________________________

What is the difference between a diffusion reaction and a diffusion-controlled reaction?

Attach a graph of In k vs I/T. Calculate the slope of your straight line Determine the Activation Energy Ea (kJ/mol) = Please show work and what you plugged in for formula

answer 13,19,25 (IDK WHAT TO DO) PLS HELP SO THAT I CAN GET A GRASP A group of students enrolled in a Physical Chemistry Laboratory class performed an experiment on the THE STUDY OF AN ADSORPTION ISOTHERM: ACETIC ACID SOLUTIONS ON ACTIVATEDCARBON. The data gathered by the group are documented in the tables below. Solve for the unknown data.

The following data were obtained for the adsorption of acetone on charcoal from an aqueous solution at 180C. Y (millimoles/g) C (millimoles/liter) 0.208 2.34 0.618 14.65 1.075 41.03 1.5 88.62 2.08 177.69 2.88 268.97 a) Find the constants k and n of the Freundlich equation. b) Find the constants a and b in the Langmuir equation. c) Find the constants k and n in the Temkin isotherm. d) Which of the isotherm fit the data best? Answer letter D only thank you!

From the following data (ESSAY DPPH & METHANOL), make a graph of the adjusted model Concentration (x-axis) vs. % inhibition (y-axis), provide the equation that is given and explain its behavior in a broad way. Do this activity step by step please

The diffusivity of iron atoms in the BCC atoms in the BCC Fe lattice is 4.2*10-23m2/sec at 400oC and 5.6*10-16m2/sec at 800oC. Calculate the activation energy in kilojoules per mole for the diffusion of iron atoms in the BCC Fe lattice in the temperature range.(upto two decimal places)

A monolayer of N2 molecules is adsorbed on the surface of 1.00 g of an Fe/Al2O3 catalyst at 77 K, the boiling point of liquid nitrogen. Upon warming, the nitrogen occupies 3.86 cm3 at 0 °C and 760 Torr. What is the surface area of the catalyst? Use the value of the collision cross-section for N2 (from the Resource section) as an estimate for the area of a molecule.

Choices: Slope: 1.09x10^4, -1.35x10^4, -1.09x10^4, 1.35x10^4 y-intercept: -27.8, -37.4, 27.8, 37.4 Pearson coefficient (R): -0.962, 0.982, -1.000 activation energy of this reaction in kJ/mol: 90.65, 9.06x10^4, 113 collision frequency factor A = 1.15x10^12, 1.54x10^14, 1.82x10^16

Calculate the residence time of strontium (Sr2+) in the world ocean, given that the average concentration of strontium in the world's rivers is approx. 0.89 umol L-1. (The concentration of (Sr2+) in the ocean is 0.092 mM, the total ocean volume is 1349.929x106 km3 , and the river input volume is 37.4x103 km3 yr-1 ).

In a Lineweaver-Burk plot of enzyme kinetic data, the x-intercept is –2.5 mM-1, what is the Km of the enzyme

The U.S. Federal Water Pollution Control Act P.L. 92-500,specifies legally acceptable methods for testing wastewater. The analysis of cyanide is performed according to the methods set out in the "Standard Methods for the Examination of Water Wastewater". This method indicates that it should be added prior to wastewater mercury chloride I (HgCl), to decompose the complex cyanides and thus be able to take a sample to perform the content analysis of cyanide. However, it should also be noted that the Illinois Pollution Control Board (IPCB) has established wastewater quality standards that limit the content of mercury (such as Hg) at 0.0005 ppm maximum in any effluent. A company that has a wastewater treatment plant applies 200 mg of mercury chloride per day before each cyanide analysis. a) Will this company comply with the maximum allowable limit of mercury according to the IPCB if discharges 100,000 gal/day of effluent and performs a daily cyanide analysis?

When the kinetic study in Question 23 was repeated at different temperatures, an Arrhenius plot of ln k2 vs. T -1 gives a slope = -7880 K and an intercept = 19.6. Use this data to obtain values for the enthalpy of activation (ΔH‡) at 298K. Give your answer in kJ mol-1 but do NOT include units in your answer.