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Show mathematically that addition of a common ion will decrease the ionization of a weak acid OR a weak base
What is the mole fraction of acetone, C3H6O, in the vapor phase from a solution consisting of a mixture of acetone and ethyl acetate, CH3COOCH2CH3, at 30.00 °C, if the total pressure above the solution is 184.6 torr?
A thief plans to steal a gold sphere with a radius of 28.8 cm from a museum. If the gold has a density of 19.3 {rm g/cm}^3, what is the mass of the sphere? [The volume of a sphere is V = (4/3)pi r^3.]
A gaseous mixture of O2 and Kr has a density of 1.192 g/L at 305 torr and 300. K. What is the mole percent O2 in the mixture
solution of potassium permanganate has a percent transmittance of 27.3% when measured in a 1.15-cm cell at a wavelength of 525 nm. Calculate the absorbance of this solution.
Determine the rate constant also explain how many mg will remain after thirty nine days - A radiation biologist studies the decomposition rate of a certain substance and obtains the given data as
Determine the value of the solubility-product constant if solubility of T3U2 =4.24× 10-20 mol/L.?
What is the approximate pH of a solution of the salt NH4(O2CCH3) (ammonium acetate)? No calculations -- only reasoning needed. pKa/pKb values in your notes
A compound, C5H12O, has an 1H NMR spectrum showing peaks at delta 0.9 (6 H, triplet), 1.5 (4 H, quintet), and 1.9 (1 H, singlet), and 3.4 (1 H, multiplet).Draw this molecule.
A hydrogen molecule in it's ground vibrational state with KE=10eV coollides with heavy atom metal surface and no energy is transferred to the surface. The surface can be modeled as an infinite potential wall.
A sample of gas inside a 150 mL piston has an initial temperature of 550 K and pressure of 8.0 atm. As the piston expands to 650 mL, the pressure decreases to 1.5 atm.
Which of the following would be expected to have the highest pH?
A sample containing 839g of water was cooled from 95°C to 27°C. How much heat was involved in this process? provide the answer in joules or kilojoules
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