Concept explainers
Interpretation:
The warm yellow color of gold is to be explained on the basis of the energy difference between
Concept introduction:
The color of the chemicals is a physical property that generally arises from the excitation of electrons due to the absorption of energy by the chemicals. All the atoms and molecules are capable to absorb and release energy in the form of photons. The amount of energy released or absorbed is the difference between the energies of the two sublevels.
The energy is proportional to the frequency and is expressed by the Plank-Einstein equation as follows:
Here,
The equation to relate the frequency and wavelength of electromagnetic radiation is as follows:
The equation to calculate the energy of a photon is,
Here,
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Chapter 8 Solutions
CHEM 212:CHEMISTSRY V 2
- Q1: Draw the most stable and the least stable Newman projections about the C2-C3 bond for each of the following isomers (A-C). Are the barriers to rotation identical for enantiomers A and B? How about the diastereomers (A versus C or B versus C)? enantiomers H_ Br (S) CH 3 H3C (S) H Br A H Br 省 H3C (S) (R) CH₂ Br H C H Br H3C (R) B (R)CH3 H Br H Br H3C (R) (S) CH3 Br H D identicalarrow_forward4. Which one of the following is trans-1-tert-butyl-3-methylcyclohexane in its most stable conformation? (NOTE: Correct answer must be trans- and must have a 1,3-arrangement of groups.) C(CH3)3 CH₁₂ A H,C D H₂C C(CH) C(CH3)3 C B CH C(CH) C(CH3)3 Earrow_forwardPredict the Product. Predict the major organic product for the following reaction:arrow_forward
- Nonearrow_forward3. Which one of the following is the lowest energy, most stable conformation of 1-bromopropane? H H H H H H H H CH3 HH Br H CH3 b b b b b CH3 A Br Br H H B CH3 Br H C H H H D CH3 H Br H E Harrow_forwardIn evolution, migration refers to the movement of alleles between populations. In your drawings, compare and contrast migration in evolutionary terms vs. in ecological terms. True Falsearrow_forward
- Curved arrows are used to illustrate the flow of electrons. Using the provided starting and product structures, draw the curved electron-pushing arrows for the following reaction or mechanistic step(s). Be sure to account for all bond-breaking and bond-making steps. Problem 31 I 1 :0: O: C 1 1 H Na Select to Add Arrows CH3CH2CCNa 1arrow_forwardgiven asp ...arrow_forwardNonearrow_forward
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- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY
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