The average time it takes for a molecule to diffuse a distance of x cm is given by t= 2D where f is the time in seconds and D is the diffusion coeffi Assume that the diffusion coefficient of glucose is 5.70 x 10 Calculate the time it would take for a glucose molecule to diffuse 20.5 um. Se sure your answer has the correct number of significant digits. Diffusion time () 4.0s %3D

The average time it takes for a molecule to diffuse a distance of x cm is given by t= 2D where f is the time in seconds and D is the diffusion coeffi Assume that the diffusion coefficient of glucose is 5.70 x 10 Calculate the time it would take for a glucose molecule to diffuse 20.5 um. Se sure your answer has the correct number of significant digits. Diffusion time () 4.0s %3D

Chemistry for Engineering Students

3rd Edition

ISBN:9781285199023

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter11: Chemical Kinetics

Section: Chapter Questions

Problem 11.4PAE: What are the steps in the Chapman cycle? Explain the importance.

See similar textbooks

Similar questions

What are the steps in the Chapman cycle? Explain the importance.
1. "Diffusion" sounds slow, but on the scale of a cell it is very fast. The average instantaneous velocity of a particle in solution is v= (kT/m)", where k = 1.38 X 101 g cm?/K sec², T= temperature in K, m = mass in g/molecule. A) Calculate the instantaneous velocity of a molecule of glucose and a molecule of myoglobin (a protein), at 37°C [molecular mass for glucose = 180 g/mol; molecular mass for myoglobin = 15,000 g/mol].
Calculate the distance olive oil (a lipid) could move in a membrane in 9 seconds assuming the diffusion coefficient is 1 um?/s. Use the equation S = (4Dt)2 where S is distance traveled, t is time, and D is the diffusion coefficient. distance:
An analysis of 0.7 kg dry soil sample (having a volume of 500 mL) showsthat sample contains 35 mg naphthalene (C10H8). Based on the results of this analysis.a) What is the density of the soil in g/cm3?b) What is the concentration of naphthalene in this sample in terms of mass percentage (%m/m) and ppmm?
You are assigned the task of separating a desired granular materialwith a density of 3.62 g/cm3 from an undesired granularmaterial that has a density of 2.04 g/cm3. You want to dothis by shaking the mixture in a liquid in which the heaviermaterial will fall to the bottom and the lighter material willfloat. A solid will float on any liquid that is more dense. Usingan Internet-based source or a handbook of chemistry, findthe densities of the following substances: carbon tetrachloride,hexane, benzene, and diiodomethane. Which of theseliquids will serve your purpose, assuming no chemical interactiontakes place between the liquid and the solids?
You are checking the accuracy of a volumetric flask marked 10.00 mL . To calculate the volume of water contained in the flask, you first measure the mass of the empty flask and the mass of the flask filled with water and take the difference. Then, you correct for the buoyancy factor and divide by the density of the water. The result of 8 such measurements is given in the table. Calculate the 95% confidence interval for these measurements with a mean of 10.03.
For gases under certain conditions, there is a relationship between the pressure of the gas, its volume, and its temperature as given by what is commonly called the ideal gas law.The ideal gas law isPV = mRTwhereP = absolute pressure of the gas (Pa)V = volume of the gas (m3)m = mass (kg)R = gas constantT = absolute temperature (kelvin )What are the appropriate units for R if the preceding equation is to be homogeneous in units?
In an experiment, a student was asked to measure the densities of liquid acetone and metallic chromium. He was given a pycnometer which weighed 26.880 g empty. When filled with water and stoppered, the mass was recorded as 54.992g at 28C. The pycnometer was cleaned and filled with acetone. The mass was 49.137 g. Again, the flask was cleaned and dried. Into it were added some chunks of chromium and the total was found to weight 78.666 g. Leaving the chromium in the pycnometer, it was then filled with acetone. The flask, metal and acetone were found to weigh 95.199 g. From this data, calculate the density of acetone and the density of chromium (show all your calculations).
7. To determine the flowing velocity of a stream, a student dropped a ball into the water. He measured that in 5 minutes the ball moved 15 m downstream. What was the stream velocity? If the cross-sectional area of the flow channel was 10,000 cm², how much water (in m³) flowed through the stream in 1 hour?
1. An iron pellet 1 cm in diameter is subjected to a heat treatment in a vacuum oven at 300 C to degas dissolved hydrogen, which is initially at a concentration of 25 ppm by weight. Estimate the time it will take for the average hydrogen concentration to reach 5 ppm. | DBF = 101 cm/scg. pr 7.8 gr/cm
CH₂-COOH Citric acid has the formula HO-C-COOH I CH₂-COOH CH2–CDD - Na* + HD-C-CDD- Na CH₂-COO- COO-Na A 25.0 mL sample of a concentrated citrus fruit cordial component (e.g. for lime juice), used in the food & drinks industry, was diluted to 250 mL in a graduated volumetric flask. A 25.0 mL sample of this diluted solution, required, on average, 22.5 mL of a standard 0.100 molar sodium hydroxide solution using phenolphthalein indicator for the titration end-point. A) 0.0075 Assuming all the acid in the cordial was citric acid, calculate the concentration of the acid in g/mL in the original solution. B) 0.576 D and is tribasic acid, forming the tri-sodium salt on complete neutralisation with sodium hydroxide. 1.44 0.00225
What will be the height of a column of chloroform (density = 1.49 x 103 kg/m3) that will be supported by a pressure of 2.00 x 105 N/m2? 1 N = 1 kg - m/s2. The acceleration due to gravity is 9.807 m/s2.