QUESTION 6 What are the two reasons for measuring the absorbance of a sample at its $lambda$ max? Better sensitivity to distinguish two similar concentrations of the same chemical compound Absorbance is more accurate, the error in determining concentration will be lowest Better sensitivity to distinguish two different chemical compounds $lambda$ max is in the range of visible light QUESTION 7 The molar absorptivity of a chemical ($epsilon$) is always constant at any wavelength (ie - it would be the same at 300nm and 400nm and 500nm) (1 pt) True False QUESTION 8 Autozero (pressing Measure Blank) is required when a new wavelength is set True False
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