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125 mL of .45M of oxalic acid is added to 200 mL of 0.55 M of potassium permanganate acidified with a few drops of concentrated sulfuric acid. Determine the mass of the gaseous compound produced in the reaction.
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An electron is ejected from a metal with a velocity 7.78 x10^5 m/s. If the metal has a threshold frequency of 9.90 x1014 Hz, what was the wavelength of the incident photon?
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Use the simulator for the hydrogen atom (https://phet.colorado.edu/en/simulation/hydrogen-atom) to estimate the energy needed to transfer one mole of electrons from the energy level n = 1 to the level n = 3.
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