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The gastric H+ pump found in the plasma membrane of gastric mucosa cells maintains a cytostolic concentration of K+ of 145 mM and an H+ concentration of 3.16x10^-8 M. In the stomach, the concentration of K+ is 10mM and the H+ ion concentration is 0.15 M.
What is the pH of the cytosol of gastric mucosa cells and what is the pH of the stomach?
What is the change in free energy of transporting 1 mol of H+ from the cytosol into stomach at 37 degrees Celsius? F=96500 J/molV, R=8.3145 J/molK. The transmembrane electrical potential is +70 mV (cytosol to stomach).
The concentration of Pb2+ in a solution saturated with PbBr2(s) is 2.14x10^-2 M. Calculate Ksp for PbBr2.
As a food chemist for a major potato chip company, you are responsible for determining the salt content of new potato chip products for the packaging label.
Photomultiplier tube with 9 dynodes and an applied voltage of -90V applied. explain how this set up can generate 10^7 electrons at the anode for each photon hitting the cathode.
On a long standing, an open bottle of aspirin will develop an odor of vinegar. What causes this to happen?
From a consideration of the Lewis structure of the thiocyanate ion, SCN- in which carbon has double bond with both the sulfur and nitrogen atoms, what are the formal charges on the sulfur, carbon, and nitrogen atoms respectively
Describe the technique used to determine the density of approximately 5 gram samples of the following at 20 degrees C and 1 atmosphere pressure: A) Gasoline B) Granular Sugar C) A lump of gold D) Mercury
The empirical formula of butane, the fuel used in the disposal of the empirical formula of butane, the fuel used in the disposal of lighters, is C2H5. In an experiment, the molar mass of butane was determined to be 58 g/mol. What is the molecular ..
If an increase in global temperatures were to cause a melting of the polar ice gaps, which of the following best describes the effect this will have on global warming
A mixture containing only BaSO4 and CaSO4 contains one-half as much Ba2+ as Ca2+ by weight. What is the percentage of CaSO4 in the mixture
Explain how hydrodewaxing, hydrocracking and hydroisomeriztion processing take place In base oil refining and also describe how aromatics (low volatile products) are converted to high quality base oil.
Calculate the concentrations of all species in a 0.790 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10-2 and Ka2 = 6.3× 10-8.
What would the bonding geometry at each nitrogen atom be for the following: NOCl, NO2Cl, and NO3Cl the options are trigonal planar, linear, tetrahedral, and bent
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