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The study of the rates of absorption and elimination of drugs by organisms is Pharmacokinetics. Elimination is usually slower than absorption and is a more important determinant of availability of a drug for binding to its target. A drug can be eliminated by many mechanisms, such as metabolism in the liver, intestine, or kidney followed by excretion of breakdown products throughout the body. After intravenous administration of a medicine, the blood plasma of a patient was analyzed for the drug in the blood stream at time, t. The data are shown below
a) What is the kinetic order of the elimination of the drug from the blood stream?
b) What is the rate constant of the reaction?
c) If the elimination is a first-order process, what is the elimination half-life?
Dentists might use a mixture of 40% N2O and 60% O2 as an initial anesthetic of nitrous oxide(although exact proprtions may vary). Determine the entropy of mixing for 1 mole of such a mixture. Assume ideal gas conditions.
What is the function of the control rods in a nuclear reactor? What substances are used to construct control rods? Why are these substances chosen?
when aluminum is heated in oxygen, aluminum oxide is formed. What weight of the oxide can be obtained from 25.0 g of the metal.
A compound found in ancient Egyptian cosmetics has the formula Pb2Cl2CO3. If a sample of this substance contains 5.83 x 1021 molecules of this substance, how many moles are present, and what is the mass, in milligrams, of this sample?
Calculate the entropy change of the universe as a result of the given processes:- A copper block of 0.4 kg mass and with heat capacity at constant pressure of 150J/K at 100°C is placed in a lake at 100°C.
You have a solution that is 18.5% (v/v) methyl alcohol. If the bottle contains 1.20 L of solution, what is the volume (V) in milliliters of methyl alcohol
Does the container containing 0.72 moles of helium follow EPA regulations - explain by determining the volume that 0.72 moles of helium gas would occupy if not pressurized.
What mass of AgBr would precipitate from this mixture? (Ksp of AgBr is 5.4x10^-13 & Kf of Ag(CN)2^1- is 1.0x10^21)
What class of compound and how many were docked into the NS5 binding sites and what PDB structure was used? What computational work-flow was used in the study?
Greenhouse gases generated from human activity absorb infrared radiation from the Earth and keep it from being dispersed outside our atmosphere. This is a major cause of global warming
BIOL/CHEM 3361 BIOCHEMISTRY HOMEWORK. What is the binding site for CO in hemoglobin? Explain the two reasons why CO restricts the delivery of oxygen to muscles
Suppose that 0.92 of water condenses on a 85.0 block of iron that is initially at 22. If the heat released during condensation goes only to warming the iron block, what is the final temperature (in ) of the iron block? (Assume a constant enthalpy ..
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