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Calculate the work done when 25.0 g of tin dissolves in excess acid at 1.00 atm and 29°C. Assume ideal gas behavior.
The isomerization of methyl isocyanide, CH3NC ? CH3CN, follows first-order kinetics. The half-lives were found to be 161 min at 199°C and 12.5 min at 230°C. Calculate the activation energy for this reaction.
Mass of an empty graduated cylinder:27.3g. mass of cylinder and 10.0 ml of liquid x: 35.2g. Calculate the experimental density of liquid x
If Ka is 1.85 x 10^-5 for acetic acid, calculate the pH at one half the equivalence point and at the equivalence point for a titration of 50 mL of 0.100 M acetic acid with 0.100 M NaOH.
In the reaction between p-aninophenol and acetic anhydride to form acetaminophen .45 ml of H20 was added. what was the purpose of adding the water
If the initial pressure of iodoethane is 894 torr at 245°C, what is the pressure of iodoethane after three half-lives?
At equilibrium 1.97e-02 mol of NOCl is found in the reaction mixture. Calculate the equilibrium pressures of all gases in the reaction vessel and the value of KP for the reaction. Pick the correct statement from the multiple choices. Use the value..
(a) Calculate the percent ionization of 0.00190 M acetic acid (Ka = 1.8e-05). % ionization = % (b) Calculate the percent ionization of 0.00190 M acetic acid in a solution containing 0.0710 M sodium acetate. % ionization = %
A buffer is prepared by mixing 161 mL of 0.193 M NaOH with 695 mL of 0.687 M sodium bicarbonate (NaHCO3). Given that the Ka1 of H2CO3 is 4.5 x 10-7 and the Ka2 is 4.7 x 10-11, calculate the pH of the solution.
Write the lewis structure, prepare a VSEPR sketch, describe the geometry, prepare a VB sketch and describe teh bonding in the allene molecule H2CCCH2
Hypochlorous acid, HOCl, is a weak monoprotic acid. Using the information for this acid in Appendix F, calculate the pH (round to one decimal) and the percent ionization _2 _(round to two decimals) of a 0.1M solution of the acid at 250C.
Suppose that an astronomer discovers a quasar with a redshift of 7.1. With what speed would this quasar seem to be receding from us? Give your answer in km/s and as a fraction of the speed of light.
To resolve an object in an electron microscope, the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule that is 8.10 nm in diameter?
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