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A) which electrons with in molecules are normally involved in absorption of UV and visible radiation?...

A) which electrons with in molecules are normally involved in absorption of UV and visible radiation?

B) A student performs a set of UV-visible determinations on a set of unknown samples for an analyze ,a with a known Lamda max, all of the students result give absorbences of between 2 and 3 why may these results not be used for the quantitative determination of a, and what must the student do next.

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