Chapter 2 - Molecular Transport

Calculate the surface excess of solute given the following data:Molar concentration in bulk solution as prepared:0.100 mol dm-3Molar concentration in bulk solution as determined:0.981 mol dm-3Total volume of solution: 100 cm3Radius of beaker containing the solution: 2.50 cm

Q1) Plot the conductance • on y-axis and time on x-axis. Q2) How to determine initial conductance (Go) and final conductance (Goo). Time Conductance (10-³s) 1.92 1.9 1.88 1 23456 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1.87 1.85 1.8 1.73 1.63 1.62 1.59 1.58 1.56 1.54 1.51 1.48 1.47 1.45 1.43 1.40 1.39

Please explain the solution

Select the phenomenon that is being described by each statement a. Breaking b. Agglomeration c. Coalescence d. Ostwald ripening e. Creaming f. Aggregation g. Flocculation   Which observes the clustering of individual dispersed droplets?     Which observes the separation of phases due to the fusion of globules?     Which annihilates the film surrounding the particles in an emulsion?   Which process is described as the coming together of particles?     Which causes the rise of dispersed particles to the surface of an emulsion?     What process is described as the deposition of small particles on larger particles?     Which observes the quick separation of the two liquids to their original state?

please answer  7 ，thanks！！

The following data apply to a 1g sample of a granular powder Volume of the solid alone = 1 cm3/2g Volume of intraparticle pores = 0.2 cm3/1g Volume of spaces between particles = 3.2 cm3/2g Volume after tapping = 1.4 cm3/1g   What is the bulk volume?

Organic chemistry

Ab 29.

10. The diffusion rate for a solute is 4.0 x 10-1" kg/s in a solvent- filled channel that has a cross-sectional area of 0.50 cm² and a length of 0.25 cm. What would be the diffusion rate m/t in a channel with a cross- sectional area of 0.30 cm² and a length of 0.10 cm?

If light machinery oil has a viscosity of 5E-2 Pa-s and density of 970 kg/m³ at 25°C, how long will it take for a sample to pass through a viscometer if water under this condition takes 1 min? Density of water is 1000 kg/m³ and its viscosity is 8.9E-4 Pa-s.A. 36.5 minB. 47.7 minC. 57.9 minD. 64.4 min

i need help solving this step by step with all the calculations  Below is a set of absorbance data that you have obtained while doing an experiment studying the diffusion of potassium permanganate into solutions of water. This diffusion experiment was conducted at three temperatures. I need help to Calculate the diffusion rates for each of these temperature conditions.  Time (min) 4°C 22°C 37°C 0 0.024 0.108 0.081 5 0.048 0.144 0.221 10 0.069 0.196 0.321 15 0.088 0.224 0.424 20 0.086 0.234 0.580 25 0.089 0.248 0.683 Once you calculate your diffusion rates  in standard notation and use 3 digits past the decimal point   (Note that the last zero is considered to be a digit)    Diffusion Rate 4°C =  __________________  Diffusion Rate 22°C = _________________  Diffusion Rate 37°C = _________________     To show how you calculated the diffusion rates for these temperature - What absorbance values did you choose to…

40.  Which of the following affects the sedimentation of a particle in gradient ultracentrifugation?  Group of answer choices the affinity of the particle for the gradient solution the viscosity of the particle solution the total mass of the gradient and tube the density of the gradient solution the number of hydrophobic residues

Short Answer 22. Explain why AH, system=-4surroundings

14. Consider the following diffusion coefficients (DM and Ds, both in cm2/min), which one will cause the minimum resistance to mass transfer? Dm = 0.035; Ds = 0.035 Dm = 0.015 ; Ds = 0.015 Dm = 0.035; Ds = 0.070 Dm = 0.025; Ds = 0.015

9- It flows (10 cm') of olive oil during a capillary tube (2 cm in length and (0.04 mm in diameter) If the height of the olive oil in the capillary tube (2.5 cm), calculate the time of the olive oil flow into the capillary tube, if you know that the viscosity of the oil ( ŋ oil = 0.18 N .sec/m? ) density of oil gm (0.918 Cma)?

Determine phosphate concentration of a water sample using the following information: Standard curve- slope: 1763.2 y-int: 0.011806 R^2: 0.99181 Absorbance of water sample: 0.013

In a sample of MgO held at 1500°C grains of MgO grew from 1um diameter to 10 um diameter in 1 hour. If the grain boundary diffusion energy is 250 kJ/mol, what will the grain size be after 2 hours and 4 hours? If the experiments were repeated at 1600°C, how would these results change?

Which technique is based on the stronger attractionsome components have for the stationary phasecompared to the mobile phase? A. filtration              D. chromatographyB. distillation           E. sublimationC. crystallization

The solvent in a collodial system is also known as the [ ?] phase. A dispersed particle dispersion medium

I need help with these (Not honor class) *the second picture is another one part of the question

Please create a caption for this table.  Solution NaCl Conc. (%) Osmolality (mOsm)  % transmittance Absorbance % hemolysis % crenation C distilled  0 0 0.001029 4.987584625 100 0.03354 1 0.177179111 54.61 0.001551 4.809388202 96.42720001 0.05837 2 0.297126222 91.58 0.01012 3.994819487 80.09527231 0.08444 3 0.442542222 136.4 3.849 1.414652089 28.3634704 0.134 4 0.590164444 181.9 64.8 0.188424994 3.777880643 0.2125 5 0.74752 230.4 95.64 0.019360433 0.388172513 0.3368 6 0.89644 276.3 99.56 0.001915112 0.038397585 0.5336 7 1.095648889 337.7 99.98 8.68676E-05 0.001741676 0.9834 8 1.336711111 412 100 0 0 2.1 9 1.755568889 541.1 100 0 0 7.9 10 2.674395556 824.3 100 0 0 57.83 11 4.490211111 1384 100 0 0 99.72

You are given three unknown samples stored in screw-cappedcontainers and was told to analyse them. You noted that Container A iscloudy and have some particles that are staying near the bottom of thecontainer. Container B is translucent while Container C is transparent. If thecontents of Container A can be separated by simple decantation,what isthe particle size that BEST describes its composition?i. <1 nmii. 1 nmiii. 1 nm-100 nmiv. >1000 nm

In the solvent hexane, the average end-to-end distance of a 7 kDa molecular weight poly(ethylene glycol) polymer chain is 3.65 nm and the average end-to-end distance of a 56 kDa molecular weight poly(ethylene glycol) polymer chain is 7.30 nm. By calculation, show whether hexane is a good, poor or theta solvent for poly(ethylene (i) glycol).

P16B.1 The viscosity of benzene varies with temperature as shown in the following table. Use the data to infer the activation energy associated with viscosity. 0/°C 10 20 30 40 50 60 70 n/cP 0.758 0.652 0.564 0.503 0.442 0.392 0.358

Q4 )A silicon wafer is doped with 10^21 phosphorus atoms / m^3. Find the carrier concentration and fermi level at room temperature ( 300 k ) Nc = 2.8* 10^25 m^-3 and ni = 1.5 * 10^16 m^-3.

Find the Miller index of the problem below and attach a clear image of your solution.

How sedimentation rate got influenced by particle mass ?

Identify the relationship of the following •DIRECT OR INDIRECT Shape of particle vs Surface Area Particle Size vs Flowability Particle Size vs Drug Stability Particle Size vs Solubility Weight of particle vs Flowability Dissolution vs Drug Absorption Angle of Repose vs Height of pile - Angle of Repose vs Particle size - Angle of Repose vs Shape of particle - Angle of Repose vs Flowability Temperature vs Dissolution Particle size vs Dissolution Rate of Dissolution vs Mechanical Energy

Organic chemistry

Egwuekwe-Ou x * Office Editing for Docs, Sheets & Slides| chrome-extension://bpmcpldpdmajfigpchkicefoigmkfalc/views/app.html aboutblank ALL2022 (1).doc Format Tools Help ~ HQ Q Normal Unsaved change 12 M HCI should we use? a. 3 L b. 1 L c. 2 L Edits will not be automatically saved. Times New ... e 28. 4 M solution of NaOH means a. 4 moles of NaOH in 1 L b. 4 grams of NaOH in 1L c. 4 moles of NaOH in 100 mls about:blank 31. What is a catalyst? 27. We have 12 M HCl and need 2 L of 6 M HCl. How many Liters of 30. Equilibrium is the state in which 12 ▾ X W FINALFALL2022 (1).doc Save now BIU A A 29. A gas mixture of N₂, O₂ and He exerts a total pressure of 1 atmosphere. N₂ exerts a pressure of 0.2 atmospheres. O₂ exerts a pressure of 0.5 atmospheres. What is the pressure of He? a. The rate of the forward reaction is greater than the reverse reaction. b. The rate of the reverse reaction is greater than the forward reaction. c. The rate of the forward reaction and reverse reaction are equal.…

An aquifer contaminated with petroleum is found to have the following component concentrations at a particular site: benzene 158 ppm toluene 124 ppm ethylbenzene 91 ppm xylene 45 ppm n-heptadecane 161 ppm pristane 84 ppm Provide an estimate for the age of the spill at this site using (a) BTEX ratio and (b) nC17:Pr ratio. Show your calculations and use units throughout. Give proper s.f. for the answer.