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Where did the Energy values come from? How did you know what values to use so you could calculate the change in energy?
A hydrogen atom initially in the n=7 quantum state emits a photon having a wavelength of 2.16495E-6 m. What is the quantum number of the final state of the atom?
a fluorinated organic gas in a cylinder is compressed from an initial volume of 960 ml at 158 pa to 478 ml at the same
Identify the limiting and excess reactions and how many grams of the excess will be unused.
Why would pharmaceutical companies choose to use ethanol (CH3CH2OH) as a solvent in their cough medicine solutions, especially considering the fact that many people would prefer to avoid alcohol when they are sick or when administering this medici..
Calculate the partial pressure of each gas in the container. Express the pressure values numerically in atmospheres, separated by commas. Enter the partial pressure of methane first, then ethane, then propane.
A 25.0-mL sample of 1.00 M NH3 is titrated with 0.15 M HCl. What is the pH of the solution after 15.00 mL of acid have been added to the ammonia solution? Kb = 1.8 × 10¯5
Calculate the volume of hydrogen gas at 25 celcius and 1.00atm required to produce an amount of energy equivalent to that produced by the combustion of a gallon of octane (C8H18).
Write a balanced chemical equation for the reaction of chlorine with thiosulfate ion, assuming an acidic solution.
if titration of 20.0 mL of 1.50 M H2SO4 solution requires 25.0 mL of NaOH to reach equivalence point, what is the molarity of the NaOH titrant
Provide a complete mechanism for the formation of 1,4-di-t-butylbenzene from t-butyl benzene, AlCl3, and t-butyl chloride. provide all resonance and intermediates. why is para preferred over meta and ortho
A solution is prepared by dissolving 10.5 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 13.00 mL sample of this stock solution is added to 55.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions ..
The oxide of which of the following metals should have the greatest lattice energy?
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