Question

Shot noise in the detector of this technique induces a standard deviation in its main output T proportional to the square root of T times T plus one. In this technique, using the octant rule to predict the Cotton effect can distinguish enantiomers through circular dichroism. Potassium dichromate is a calibration standard (-5[1])for this technique. Using this technique, the purity of a DNA or RNA mixture is characterized by the 260 to 280 ratio. (10[1])This technique’s input value for a highly conjugated compound can be estimated (-5[1])by applying the Woodward–Fieser rules. (10[1])This technique’s primary measurement equals the product of concentration, the path length of a cuvette, and the molar extinction coefficient, by the Beer–Lambert law. (-5[1])For 10 points, name this technique that tracks the absorbance of a sample with respect to low wavelengths. ■END■ (10[1]0[3])

ANSWER: ultraviolet spectroscopy [or ultraviolet–visible spectroscopy or UV spectroscopy or UV/Vis spectroscopy; accept spectrophotometry; prompt on spectroscopy]
<MY, Chemistry>
= Average correct buzz position

Back to tossups

Buzzes

PlayerTeamOpponentBuzz PositionValue
Aditya PatnaikOhio State BCarnegie Mellon A51-5
Yashwanth BajjiMichigan AMichigan B7310
Alan LeeCase Western AMichigan D85-5
Calvin BostlemanOhio State ACarnegie Mellon B9010
Angelo PanCase Western BMichigan State114-5
David NiemanCarnegie Mellon AOhio State B13310
Dennis YangMichigan CKenyon1330
Noah DeanKenyonMichigan C1330
Peter BallasMichigan DCase Western A1330

Summary

California2025-02-01Y3100%0%0%82.00
Florida2025-02-01Y1100%0%0%54.00
Great Lakes2025-02-01Y650%0%50%98.67
North2025-02-01Y367%0%67%123.50
Overflow2025-02-01Y5100%0%0%82.40
Pacific Northwest2025-02-01Y2100%0%50%98.50
South Central2025-02-01Y2100%0%0%75.00
Southeast2025-02-01Y4100%0%0%81.50
UK2025-02-01Y1080%0%20%106.50
Upper Mid-Atlantic2025-02-01Y875%0%50%104.33
Upstate NY2025-02-01Y3100%0%0%107.00