Figure 1:Water Against Empty Refrence Beam vs. Water Against Water 0.01 0 -0.01 -0.02 Absorbance -0.03 mmh -Water Agains
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Figure 1:Water Against Empty Refrence Beam vs. Water Against Water 0.01 0 -0.01 -0.02 Absorbance -0.03 mmh -Water Agains
features in the spectra - peaks, bumps, jumps, etc. Consider the
wavelength dependence of the two spectra, comment on the average
magnitude of the signals, and the noise amplitude. What is the
difference between a spectrum of? Explain.
What do you think it should be? Calculate the standard
deviation of all the signals for the water vs. water spectrum. Is
the difference between the experimental average and your prediction
significant? Justify your answer.
Identify any unusual features in the spectra ---peaks,
bumps, jumps, etc. Consider the wavelength dependence of the 2
spectra, comment on the average magnitude of the signals, and the
noise amplitude. Estimate the signal to noise ratio for the two
Ni2+ solution spectra. Did you expect a difference in the
calculated S/N? Explain. What is your estimate of the uncertainty
in the absorption? Is this different from that of the water
spectra? Explain.
Figure 1:Water Against Empty Refrence Beam vs. Water Against Water 0.01 0 -0.01 -0.02 Absorbance -0.03 mmh -Water Against Empty Refrence Beam Water Against Water -0.04 -0.05 -0.06 340 390 440 640 690 740 490 540 590 Wavelength (nm) Figure 2: Stock with Empty Refrence Beam vs. Stock with Refrence Beam 1 0.8 Absorbance 0.6 0.4 0.2 Л n 0 • stock with empty refrence beam stock with refrence beam -0.2 -0.4 -0.6 350 750 450 550 650 Wavelengths(nm)