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Determine the Ka of the ethylammonium ion (C2H5NH3+). [Kb of ethylamine (C2H5NH2) = 8.6 x10^-4]
Within a red blood cell [ATP], [ADP], and [Pi] are maintained under steady state conditions at 1.85 mM, 0.14 mM and 1.0 mM respectively. Calculate the deltaG' of ATP hydrolysis under these conditions at pH 7.0 and standard temperature and pressure..
The force to push electrons through a battery comes from (a) the energy levels of the electrolyte (b) the intrinsic work function difference of two different metals (c) from electricity (d) an unknown source of energy
what is the ph of a Solution prepared by mixing 163.0 ml of 2.4×10?3 MHCl and 382.0 ml of 1.4×10?3 HClO4 (Assume that volumes are additive.)
Cadmium telluride, , takes the zinc blende structure with a unit cell edge length of . There are four cadmium atoms and four tellurium atoms per unit cell.
A 355 ml container holds .146g of Ne and an unknown amount of Ar at 35 degrees C and a total pressure of 26 mmHg. Calculate the moles of Ar present
Buffering Action of Proteins, We did this experiment in class but I want to see if the results seem reasonable and, if so, why they were not more varied.
A hydrocarbon is a compound that contains mostly carbon and hydrogen. Calculate the percent composition (by mass) of the following hydrocarbon
Assume that the reaction is second order in CV. If [CVo]=1.35x10-5M and the value of k = 0.096 l/mol-min, what is the half-life of the reaction.
Calculate the partial pressure of water above the solution, in torr.The vapor pressure of pure water at 55°C is 118.0 torr. The MW of lactose is342.3 g/mol
A sample of an unknown gas effuses in 10.1 min. An equal volume of H2 in the same apparatus under the same conditions effuses in 2.16 min. What is the molar mass of the unknown gas
The pI can be estimated fairly accurately (within 0.1 or 0.2 pH units) from the pK values of all the proton dissociable groups in the peptide. Using pK values from the table at the right, estimate the pI value of the following hexapeptide
What is the second step in the scientific method? 1-to analyze the data, and create a theory to confirm the experimental observations 2- to analyze the data, and propose a tentative hypothesis to explain the experimental observations.
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