mg/L of cell tissue and 10 mg/L of ammonia
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- A cell with an internal concentration of 0.03 molar glucose is placed in a test tube containing 0.02 molar glucose solution. Assuming that glucose is not actively transported into the cell, describe the internal concentration of the cell relative to its environment?Molecular diameters of proteins IgG and TNFα are 11.2 nm and 4.4 nm, respectively. The diffusion coefficient of IgG in a dilute aqueous solution at 37oC is 2.8 ⤬ 10-7 cm2/s. Estimate the diffusion coefficient of TNFα in a dilute aqueous solution at the same temperature.A 0.0284 M aqueous solution of lactic acid, HC3H5O3, a substance that accumulates in the blood and muscles during physical activity, is found to be 6.7% ionized. Determine the value of Ka for lactic acid.
- Calculate the effective quantity (g) of sodium chloride related to tonicity in 100 mL of an intravenous fluid labeled "5% dextrose in 0.45% sodium chloride," and indicate whether the solution is isotonic, hypotonic, or hypertonic.Creatinine, C4H7N3O, is a by-product of muscle metabolism, and creatinine levels in the body are known to be a fairly reliable indicator of kidney function. The normal level of creatinine in the blood for adults is approximately 1.0 mg per deciliter (dL) of blood. If the density of blood is 1.025 g/mL, calculate the molarity of a normal creatinine level in a 10.0 mL blood sample.The osmotic pressure of human blood is 7.6 atm at 37 °C. What mass of glucose, C6H12O6, is required to make 1.00 L of aqueous solution for intravenous feeding if the solution must have the same osmotic pressure as blood at body temperature, 37 °C?
- The simple form of |Hoff equation is: II = [B]RT In this equation the [B] is the molar concentration of solute. So: n m [B] = v MV = cg /MA Where c, the mass concentration of the solute is in the total volume of solution and M, is the molar mass of the solute. This equation can be replaced in the previous one to get: RT II = MA In this equation molar mass of given solute can be detemined from the slope of the II vs Cz plot. This equation applies only to solutions that are sufficiently dilute to behave as ideal-dilute solutions. In the case of non-ideal solutions, however, the extended formula is: II = [B]RT{1+ k. [B] + n. [B]² + ...} Biological macromolecules dissolve to produce solutions that are far from ideal, but we can still calculate the osmotic pressure by assuming that the van't Hoff equation is only the first term of a lengthier expression: II [B]RT(1+ b. [B]) II = RT + bRT. [B] [B] II = RT + bRT./M. */Ma п RT ÞRT Ca MA MA In this equation molar mass of given biomolecule can…The diffusion constant for glucose in water is 0.70 ✕ 10−5 cm2/s. About how much time would it take to get significant diffusion across the following structures? Assume that glucose diffuses through cells and membranes as fast as it does through water. a)across a cell membrane 8 nm thick b)from the center of a eukaryotic cell 6µm in radius to the cell membrane c)across the wall of the human heart 2.5 cm in thickness d)from the cells in the center of the cactus to the photosynthetic cells on the surface of a barrel cactus if the cactus has a radius of 12 cmOvalbumin is one of the main proteins in egg white. If you consider a diameter of 5.4486 x 10-9 m and its specific volume of 0.75 cm3 / g. a) Calculate the coefficient of diffusion of ovalbumin in water at 20 ° C b) Determine its molecular weight.
- A solution of Na2CO3 contains 53g of solute in 200ml of solution. What is the molarity of this solution.Solution A contains 100 mmol/L glucose and Solution B contains 50 mmol/L NaCl. Assume that gNaCl is 2.0, σglucose is 0.5, and σNaCl is 0.8. If a semipermeable membrane separates the two solutions, what is the direction of water flow across the membrane?The order is for Ceftin 0.25 gPO, bid. On hand you have Ceftin 125mg tablets. How many tablets should you give?