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A. Concentration
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B. Both A and B
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C. Length
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D. It has no unit
Explanation
Absorbance (A) is a logarithmic ratio of incident to transmitted light; hence, it is unitless.
In the Beer-Lambert law:
A=ε⋅C⋅L, only ε (molar absorptivity) carries units to balance the equation.
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A. 100
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B. None of these
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C. 0.0
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D. 0.100
Explanation
- Absorbance (A) and Transmittance (T) Relationship:
A = -log(T/100) - At 100% Transmittance (T), the equation becomes:
A = -log(100/100) = -log(1) = 0.0 - Thus, the absorbance at 100% transmittance is 0.0.
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