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10 Cards in this Set
- Front
- Back
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EXAM 2 PHYSICS: DIFFUSION AND OSMOSIS
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EXAM 2 PHYSICS: DIFFUSION AND OSMOSIS
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Fick's Law
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Rate of diffusion of a substance across unit area is proportional to the conc gradient.
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0.9% NaCl soln
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9 grams in 1L
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5% glucose soln
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50 grams glucose in 1L
or 50/180 or .28 molar soln |
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Composition of LR?
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Na 131 mmol/L
K 5 Ca 2 Lactate 29 Cl 111 Total: 278 mosmol/L |
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What is the osmotic pressure of blood colloids?
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4 kPa (30 mmHg)
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How much pressure is required to overcome the resistance of the kidney tubules and the rest of the urinary tract?
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4-5.3 kPa (30-40mmHg).
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How much pressure is required for efficient kidney function?
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9.3 kPa (70 mmHg)
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Raoult's Law
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The depression or lowering of vapor pressure of a solvent is proportional to the molar concentration of the solute.
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What is temperature?
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A measurement of the average KE.
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