Physics

Physics, 21.08.2019 05:10, kaciebrin211

Why is the steady state concentration gradient linear in equimolecular counter diffusion?

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Biology, 13.07.2019 04:40, carlosbs71

How does each of the following molecule pass through the plasma membrane in the described scenarios? a. both simple diffusion and facilitated diffusion b. facilitated diffusion c. active transport d. simple diffusion selectabcd 1. molecular oxygen (o2) and carbon dioxide (co2) traveling down their concentration gradient. selectabcd 2. inorganic ions traveling down their concentration gradient selectabcd 3. glucose traveling against its concentration gradient selectabcd 4. water molecules (h2o) traveling down their concentration gradient

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Physics, 20.07.2019 04:10, kingfptduong

The steady-state diffusion flux through a metal plate is 7.8 × 10-8 kg/m2-s at a temperature of 1220˚c ( 1493 k) and when the concentration gradient is -500 kg/m4. calculate the diffusion flux at 1000˚c ( 1273 k) for the same concentration gradient and assuming an activation energy for diffusion of 145,000 j/mol.

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Biology, 23.10.2019 04:00, huneymarie

Name section 4: diffusion and osmosis study guide b key concept materials move across membranes because of concentration differences vocabulary passive transport diffusion concentration gradient osmosis isotonic hypertonic hypotonic facilitated diffusion main idea: diffusion and osmosis are types of passive transport. 1. what is a concentration gradient? 2. what does it mean for a molecule to diffuse down a concentration gradient?

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Engineering, 01.11.2019 04:31, joedawg50

Asheet of steel 2.5 mm thick has nitrogen atmosphere on both sides at 900 oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 1.2 x 10-10 m2/s, and the diffusion flux is found to be 1.0 x 10-7kg/m2-s. also, it is known that the concentration of nitrogen in the steel at the high pressure surface is 2 kg/m3. how far into the sheet from this high pressure side will the concentration be 0.5 kg/m3? assume a linear concentration profile

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