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Aspirin is a weak acid (pKa=3.5). When it enters the body, the undissociated form of the acid can freely permeate membranes where the dissociated ions cannot. Determine the ratio of total drug in the blood plasma (pH 7.4) over the stomach (pH 1.0)
what will be the heat capacity in units of jk of a constant pressure coffee-cup calorimter that contains 100.0 ml of
A biochemical engineer isolates a bacterial gene fragment and dissolves a 13.1 mg sample of the material in enough water to make 39.3 mL of solution. The osmotic pressure of the solution is 0.340 torr at 25°C.
Correct orders the solubility, from greatest to least, of NaCl in the solvents BF3, H2O, and CH3(CH2)2OH
For the reaction 2NO(g)+O2(g)---> 2NO2(g).....delta G=-77.4kJ and delta S=-146.5 J/K at 251 K and 1 atm A) this reaction is (reactant, product) favored under standard conditions at 251 K B) the standard enthalpy change for delta H for the reaction..
Choose the answer in which the oxide with the formula given is correctly characterized as ionic or molecular.
How would you prepare 500.0 mL of a 0.750 M solution using Sulfuric acide from 18.0 M concentrated liquid. B) Sodium carbonate powder
Cabernet Sauvignon with a pH of 3.64. How many times more acidic is the Sauvignon Blanc? Please show work thoroughly and answer both questions.
determine what is the percent yield of the reaction if 15.0 grams of nitrogen and 2.00 grams hydrogen react to produce
Determining the Lewis structures of small compounds is the first step towards determining the molecular shapes of larger and larger molecules.
Use the values of Ka1 = 0.056 and Ka2 = 5.4 x 10-5 to calculate the [OH-] in a 0.456 M solution of oxalic acid (H2C2O4). Use E notation and 3 significant figures.
Write out the balanced equation for the reaction that occurs when Ca and Al(NO3)3 react together. You do not need to make your subscripts smaller; just write them out at regular numbers. For example: Al(NO3)3.
Wriite an equation for a substitution reaction between 2-bromopropane and potassium iodide. In this case, do not include the state
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