What is LSPR and how is it different from traditional SPR? Traditional SPR uses a continuous gold film, while LSPR is created through metal nanoparticles, usually silver and gold. A powerful resonance absorbance peak is produced in the visible range of light by LSPR. What is surface plasmon wa...
Why can a population inversion not be achieved by simply heating a potentially laser-active material? Why does the uncertainty principle make it impossible to predict a trajectory for the electron? Why is the measurement of absorbance unitless?
What is meant by a "saturated" solution? Distinguish between hydrophilic and hydrophobic colloids. Describe two experiments to show that a certain colorless liquid is water. The absorbance of a solution is 0.02. What is its % transmittance (% T)?
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aThe first-order plots of ln(A - A∞) vs time (A and A∞are denoted to the absorbance at the reaction time and the final absorbance, respectively) were linear until three or more half-lives,with the correlation coefficient F > 0.999. 正在翻译,请等待... ...
What is the advantage of reading the absorbance rather than the percent transmittance on a spectrophotometer? What is meant by the "endpoint" of a titration? What color change would get when one drop of BTB to CH_3COONa? What do we mean by the equivalence point in a titration?
The absorbance of a solution is 0.02. What is its % transmittance (% T)? What are the fundamentals of chemistry? Define titration. In organic chemistry, what is meant by titration? When heating chemicals that could be volatile, what would be the best way to conduct this experiment?
How do we know that matter is composed of atoms? What assumptions can we make regarding the absorbance spectrum of a solution by only knowing the color and the scattering of light? What gives an element its characteristics? Who built the mass spectrograph and what was its intended purpose?
What properties are expressed by wavelengths? Explain the visible spectrum as thoroughly as possible. What is the absorption site for vitamins and minerals? (a) What is UV radiation? (b) What is light? (c) What is the relationship between them? What is the relationship between absorbance, tr...
What is meant by the term "molar absorptivity" with regard to spectroscopic measurements? If the absorption of one of your samples is off ,what is the most likely problem? What should be done to reduce the absorbance? Why should it be reduced?