Ionization of ephedrine hydrochloride
What is the percent ionization of ephedrine hydrochloride with pka of 9.6 in the intestinal tract buffered at PH 8?
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The same man in the example is still in the elevator weighing the same fish, after measuring a weight of 50 N before entering the elevator. During what part(s) of the travel does the scale register a weight of less than 50 N?
A beaker with 2.00×102 of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. How much will the pH change? The of acetic acid is 4.760.
If 18.2 mL of 0.800 M~rm HCl solution are needed to neutralize 5.00 rm mL of a household ammonia solution, what is the molar concentration of the ammonia?
The heat of reaction for the combustion of cyclohexane, C6H12, is 936.8 kcal/mol. What is the heat of combustion for cyclohexane in kcal/gram?
A battery with an emf of 1.50 V has an internal resistance r. When connected to a resistor R, the terminal voltage is 1.40 V and the current is 0.10 A. What is the value of the external resistor R?
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5.0 g of H2O at 23.0 oC is added to 100.0 g of H2O at 67.5 oC.What is the temperature of the resulting mixture.
Compute the wavelength of the radio waves from the following stations. An AM station operating at a frequency of 710 kHz, An FM station wiht a frequency of 96.3 MHz.
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