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A hydrogen atom has its electron in the n = 2 state.
(a) How much energy would have to be absorbed by the atom for it to become ionized from this level?
_____________ eV
(b) What is the frequency of the photon that could produce this result?
_____________ Hz
The numbers indicate the relative amounts present at equilibrium, compared to 1-butene as the standard. 1-Butene: 1.0 cis-2-Butene: 7.2 Trans-2-Butene: 85 Explain this trend qualitively.
Since their discovery in 1951, HeLa cells have been used to study disease progress as well as disease treatments.
Ethanol (without catalyst) yields a di-ether in nearly quantitative yield. Provide the structure of the product. Mechanistically, provide two routes that accound for the observed product.
1. how many mls of 0.560m nicl2 fw129.606 solution are required to react with 15.00 ml of 0.808m agc2h3o2 fw166.912
According to the Bohr model, the allowed energies of the hydrogen atom are given by the equation: E = (-21.7 x 10-19)/n2 J. Which of the following energy levels is not possible in the Bohr hydrogen atom
The dream of the materials chemist is to discover a material that would be superconducting above room temperature, thus that no refrigerant would be necessary.
One of the allotropes of sulfur is the orthorhombic form, formula of S8 (8 is a subscript), which is a brittle, yellow solid. It does not conduct electricity. This form is stable below 94.5 deg C. It dissolves more in nonpolar solvents.
what is the balanced net ionic equation for the reaction below in basic solution? enter the coefficient for each
Calculate the energy, in joules, required to excite a hydrogen atom by causing an electric transition from the n=1 to the n=4 principal enegry level
Problem- During the hydration and purification of norbornene with sulfuric acid, one of the purification steps is a cold water extraction/wash. Methylene chloride and water are used as the immiscible solvents.
A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass. Assuming that the density of bleach is the same as water, calculate the volume of household bleach that should be diluted with water to make 500.0 mL of a pH = 9.80..
A common mineral in earth's crust has the chemical composition 45.51% Cu, 20312% Si, and 24.37 O, by mass. Explain what is its empirical formula
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