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1. Rank the items from the highest change in energy to the lowest change in energy. To rank items as equivalent, overlap them.- n=2 to n=5- n=1 to n=3- n=1 to n=5- n=3 to n=4
2. An electron undergoes a transition from an initial (ni) to a final (nl) energy state. The energies of the and energy states are -2.179 X 10^-18 J and -8.720 X 10^-20 J respectively.
Calculate the wavelength of the light in nanometers corresponding to this transition. You can use the following values for your calculations:
Some water was added to the initial reaction mixture of 5mL water, 5.55g sodium bromide and 5 mL butanol in the procedure that was perfromed to obtain 1-bromobutane from 1-butanol.
What is the wavelength of an electron traveling with a velocity of 7.0 times 10 to the 3rd power?
Write a complete set of quantum numbers for the fifth electron added to a hydrogen ion. (ie, the fifth electron in any electron configuration). N= l= ml= ms=
What would be pmm concentration of a solution of 0.000775 mol of sodium chloride in 1250 ml of solution. (Molecular weight of sodium chloride is 58.5)
The Ka of a monoprotic weak acid is 5.81 × 10-3. What is the percent ionization of a 0.147 M solution of this acid?
the density of water is 1.0g/ml at room temperature. briefly explain how the density of an aqueous solution at room temperature can be significantly less than 1.0g/ml?
A compound made of elements from group 2A ("M" below) and group 6A ("X" below) of the periodic table would be expected to have a formula
What effect will increasing the temperature have on the system? Fe3O4(s) + CO(g) ?? 3 FeO(s) + CO2(g) DH°= +35.9 kJ A) No effect will be observed. B) The reaction will shift to the right in the direction of products.
3-bromo- 1-butene and 1-bromo-2-butene undergo sN1 reaction at nearly the same rate even though one is a secondary halid and the other is primary why
Calculate the concentration of an aqueous solution of Ca(OH2)that has a pH of 12.57? Express your answer using two significant figures.
How would the value of molecular weight be affected if all of the liquid is not vaporized. Explain
Cyclopropane contains 85.7%C and 14.3% H by mass. At 50C and .984 atm pressure, 1.56g cyclopropane has a volume of 1L. What is the molecular formula?
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