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Papaverine hydrochloride (C20H21NO4HCl) is a weak acid. It is used in medicine as a muscle relaxant. A 0.205 M solution of papaverine hydrochloride has a pH = 3.31. Find the Ka of papaverine hydrochloride.
which one of the following alkyl halides gives the highest ratio of substitution to elimination on treatment with sodium ethoxide in ethanol, and why?
Suppose that the atomic mass unit (amu) had been defined as one-sixth of the average mass of an atom of sodium instead of one-twelfth of the mass of an atom of carbon-12. What would the average atomic mass of magnesium be on this new scale
The weight of an object is the product of its mass, , and the acceleration of gravity, (where ). If an object's mass is , what is its weight.
what volume of nitrogen gas is needed to react completely with 150.0 L of hydrogen in the production of ammonia.
Classify each of the following bonds as nonpolar covalent, polar covalent, of ionic. If a bond is polar covalent, identify the atom that has the partial negative charge and the atom that has the partial positive charge
Define nucelophilicity. Give a detailed explanation as to why hydroxide
given the following information, will caco3 be precipitating when Ca2+ = (0.01 mol/l, CO3 2- + HCO3 - + H2CO3 = 0.1 mol/l )
if a blue light has a wavelength of 5.50 x 10-7 550 nanometers what is the frequency of the
During a chromatography experiment, a student calculated two Rf values. They are A: .62 and B: ,30. The solvent front for the original chromatogram was 12.0 cm. If A and B were run on a second chromatogram and the solvent front was 25.0 cm, how fa..
assume you dissolve .297 g of the weak acid benzoic acid in enough water to make 105 ml of solution and then titrate
ammonia nh3 can be synthesized by the following reaction2 no g 5 h2g -gt 2 nh3g 2 h2ogstarting with 86.3 g no and
The burning of ethane produces both CO2 and H2O. If 200 mL of CO2 is produced at 20°C and 750 torr, what volume of water vapor would be produced at 24°C and 790 torr?
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