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1. In todays experiment, tube 1 represented the blank. Why did we use a complex mixture for a blank instead of just water? (
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Answer #1

A blank is meant to be used as a control for the spectrophotometric experiments.

Water is used in most cases since water as the common solvent used in dissolving the chemical reagents or the biomolecules.in order to measure their concentration.

A complex mixture is used when the mixture itself is used as a solvent for dissolving component whose concentration has to be determined.

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