A substance that appears red most likely absorbs visible light strongly in the of the visible light spectrum green and n
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A substance that appears red most likely absorbs visible light strongly in the of the visible light spectrum green and n
After excitation by absorbing visible light, what is the most common pathway for chemical species to "relax" and rid themselves of the excess energy? direct emission of light phosphorescence of light fluorescence of light thermal relaxation
A solution having a high absorbance will have a %transmittance value. O low Othere is no firm relationship between absorbance and %transmittance O high
According to the Beer-Lambert law, absorbance (A) of a solution and the concentration (C) of absorbing species are ----- proportional and the absorbance (A) of the solution and the path length (b) of the radiation are proportional. directly; inversely directly; directly inversely; directly O directly; exponentially O exponentially; directly O inversely; inversely
The Beer-Lambert law can be written as A = abc. In this equation, a is the molar absorptivity and depends on O two of these O solution density the nature of the absorbing substance solution concentration all three of these
A student prepares a Beer's Law plot (a calibration curve) from their standard series and obtains an equation y = 9.506x + 0.0007 R2 = 0.9985 from the "trendline" procedure in MS Excel. In this equation, the variable "y" corresponds to which parameter of the Beer-Lambert Law? two of these path length O concentration absorbance O absorptivity
A student prepares a Beer's Law plot (a calibration curve) from their standard series and obtains an equation y = 9.506x + 0.0007 R2 = 0.9985 from the "trendline" procedure in MS Excel. In this equation, the value 9.506 corresponds to which parameter of the Beer-Lambert Law? two of these absorptivity concentration O path length O absorbance
= A student prepares a Beer's Law plot (a calibration curve) from their standard series and obtains an equation y = 9.506x + 0.0007 R2 = 0.9985 from the "trendline" procedure in MS Excel. In this equation, the variable "x" corresponds to which parameter of the Beer-Lambert Law? O absorptivity O path length two of these concentration O absorbance
Which of the following equations will be useful in determining the concentrations of the standard solutions prepared by dilution? M1V2 = M2V1 = O M1V1 = M1V1 M1V1 = M2V2 O M1 /V1 = M2 / 12 O v1/ M1 = V2 / M2 = =