Calculate the wavelength of the photon emitted
calculate the wavelength of the photon emitted when an electron drops from 4d obital to a 2p orbital in a hydrogen atom using Rydberg constant as 1.097 x 10-2pm-1
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Iron ore is produced through the following reaction in a blast furnace. If 4.00kg of iron(III) oxide reacts, how many moles of carbon monoxide are needed?
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Calculate the pH at the equivalence point for the titration of 0.20 M aniline (C6H5NH2, Kb = 3.8 x 10-10) with 0.20 M HCl. [Hint: remember the dilution factor caused by addition of titrant to the aniline solution.]
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An auto mechanic spills 78. mL of 2.5 M H2SO4 solution from a rebuilt auto battery. How many milliliters of 1.3 M NaHCO3 must be poured on the spill to react completely with the sulfuric acid?
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