Chem & Physics Quiz
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A biophysics lab evaluates whether increasing light intensity increases the rate of a photochemical reaction that produces a colored product. The hypothesis is that higher intensity yields a faster initial rate because more photons are absorbed per unit time. Identical cuvettes containing the same reactant concentrations are illuminated for 30 s at either low or high intensity, while temperature is maintained at 25°C. The only condition changed is light intensity. The absorbance at 500 nm (proportional to product concentration) is measured immediately after illumination: low intensity A=0.10; high intensity A=0.40. Which hypothesis best aligns with the study's design?
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