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Suppose the energy of a vibrating molecule is quantized much like the energy of an electron in the hydrogen atom. The energy levels of a vibrating molecule are specified by the equation
En = (n +1/2)hv, h= 6.626*10-34Js
Where n is the quantum number with possible values of 1, 2.... as well as v is the frequency of vibration. The vibration frequency of HCL is approximately 8.85 *1013s-1. Explain what minimum energy is required to excite a vibration in HCL?
For a reaction at equilibrium, which of the following is the best way to think about it?
Determine the pH of a solution containing A) neglecting activities. B) including activities The solution contains BOTH chemicals
Copper exists as two isotopes ^63Cu (62.9298u) as well as ^65Cu (64.9278 u). Explain what is the approximate percentage of 63Cu (62.9298 u) in samples of this element
a 0.573g sample of nonvolatile solute is added to 15.6g of naphthalene and the mixture warmed until melted. the
what is the energy uncertainty associated with a short pulse of laser light that lasts 4.8fs
In a laboratory experiment, students synthesized a new compound and found that when 14.10 grams of the compound were dissolved in 208.0 grams of ethanol, the solution began to boil at 78.9510C
write the balanced chemical equation for each of the following equilibrium constant expressions: a)Kc=[CO2][H2]/[CO][H2O. b)Kc=[H2][F2]/[HF]^2. c)Kc=[O2][HCl]^4/[Cl2]^2[H2O]^2. d)Kc=[CS2][H2]^4/[Ch4][H2S]^2.
How many times faster will the reaction occur at 43^circ {rm C} than at 0 ^circ {rm C}? How many times faster will the reaction occur at 43^circ {rm C} than at 0 ^circ {rm C}?
Explain how would you change the procedure in this experiment if you wished to synthesizebenzalacetone, C6H5CH=CHCOCH3?
Balance the following oxidation-reduction reactions that occur in basic solution.
The solubility of the ionic compound M2X3, having a molar mass of 238 g/mol, is 2.89 10-7 g/L. Calculate the Ksp of the compound
Initially a mixture contains 0.629 mol each of N2 and O2 in an 6.64-L vessel. Find the composition of the mixture when equilibrium is reached at 3900°C. For the reaction below, the Kc = 0.0123 at 3900°C.
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