1. Given the following measured plasma concentrations of drug at the times indicated, calculate the following: (first order elimination) 2 hrs - 5 mg/L 6 hrs-2 mg/L a. half-life b. plasma concentration at t=0
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Please solve using the equations:
dCp/dt=-k(Cp)
t1/2= 0.693/k
Cp=C0e^-k(t)
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- a) If the concentration is 100mg/l and the elimination rate constant is 25mg/hr. What is the concentration in 2 hours? b) If co = 100mg/l and k = 0.10hr-1. What is the concentration 6 hours later?How did the rate change as the concentration of the S2O8-2 was halved. Expalin at molecular level.Carbonic anhydrase catalyzes the hydration of carbon dioxide: H2O + CO2 -> HCO3- + H+The following data is available: (image) - Calculate the Michaelis Menten constants - In the presence of sulfanilamide the Michaelis Menten constants for the reaction are Vmax: 7.57e-5M/s and Km: 20M. What type of compound is sulfanilamide and what is its mechanism of action?
- The second-order rate constants for the reaction of oxygen atoms with aromatic hydrocarbons have been measured (R. Atkinson and J.N. Pitts, J. Phys. Chem. 79, 295 (1975)). In the reaction with benzene the rate constants are 1.44 × 107 dm3 mol−1 s−1 at 300.3 K, 3.03 × 107 dm3 mol−1 s−1 at 341.2 K, and 6.9 × 107 dm3 mol−1 s−1 at 392.2 K. Find the frequency factor and activation energy of the reaction.show the reaction mechanism formation of Co(III) acetylacetonate from CoCO3 dissolved in acetylacetone, ammonia and 2ml of acetylacetonate with 10% aqueous hydrogen peroxide. show the arrangement of the ligand around the complexWhich of the species below best depicts the likely transition state for the reaction between methyl iodide, CH3I and sodium methylthiolate, NaSCH3?
- For the gas phase isomerization of isopropenyl allyl ether, CH2=C(CH3)-O-CH2CH=CH2-->CH3COCH2CH2CH=CH2 the rate constant at 405 K is 2.60x10^-5 s^-1 and the rate constant at 440. K is 4.75x10^-4 s^-1. The activation energy for the gas phase isomerization of isopropenyl allyl ether is ________ kJ.Useful Information: sodium metam: Commercial grade sodium metam is 33% pure sodium metam by weight and has a density of 1.2 g/mL. Hydrolysis of metam (Methyl isothiocynate) + H2S Rate constants for hydrolysis for metam (base catalyzed hydrolysis is negligible) = 300 mol -1 L. sec -1 , = 1 x 10-8 sec-1 Metam also undergoes photolysis to methyl isothiocyanate with a half-life of 1.6 hrs. Data for Sacramento River discharge Q = 75,000 L/min mean depth = 0.30 m pH = 7.8 mean width = 3.2 m dispersion coefficient D = 1.6 x 102 m2/min Assuming the spill acts acts as a single point source. How long does it take for the maximum contaminant concentration to get to Lake Shasta? If Na+ acts as conservative (i.e., it is not transformed) tracer, calculate the maximum concentration (in g/L) at Lake Shasta. (Hint: remember that sodium only constitutes a…How the rate of reaction is affected by phenomenon of selectivity with at least 3 examples.
- What happens when (write reactions involved) iv and vouter-sphere mechanism: [Cr(OH2)6]2+ + [IrCl6]2- ⇄ [Cr(OH2)6]3+ + [IrCl6]3- inner-sphere mechanism: [Cr(OH2)6]2+ + [IrCl6]2- ⇄ [Cr(OH2)5Cl]2+ + [IrCl5(OH2)]2- a) Please draw the sequence of reactions that leads to the products on the inner-sphere redox mechanism. Be sure to note the lability or interness of each complex based upon their dn configuration. b) The outer-sphere mechanism has a fairly large rate constant (ca. 109 M-1 s-1) which means that there must be a very small activation barrier for this reaction. If that is true, what conclusions can we draw about the bond lengths in the reduced and oxidized forms of the Cr and Ir complexes?E 21 write mechanisms for the given reactions