29. Solving a chemistry problem
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29. Solving a chemistry problem
4. The test solution has an optical density of 0.90 when measured in a cuvette with a layer thickness of 5 cm. Calculate its concentration (µg/ml) if a standard solution containing 5 µg/ml of the same substance has an optical density of 0.6 when measured in a cuvette with a layer thickness of 3 cm.
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