Bonus
For 10 points each, answer the following about the work of Czech scientists in electrochemistry.
[10m] Czech scientist Jaroslav Heyrovský invented polarography, which is a form of voltammetry that uses a dropping electrode of this element. Three atoms of this metal can form into a triangular ion with a +4 charge.
ANSWER: mercury [or Hg]
[10h] This equation, partly named for a Czech scientist, states that the peak current of a cyclic voltammetry experiment is proportional to the square root of the product of scan rate, the Faraday constant, and the diffusion coefficient.
ANSWER: Randles–Ševčík equation
[10e] Heyrovský’s polarography setup has a larger voltage window than standard hydrogen electrodes, whose reduction potential equals this many volts. This is the redox potential between two identical electrodes.
ANSWER: zero volts [or 0]
<Chemistry>
Answerlines and category may not exactly match the version played at all sites
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| Chicago A | Michigan | 10 | 10 | 10 | 30 | MHE |
| Columbia B | Arizona State | 0 | 0 | 10 | 10 | E |
| Georgia State | Ohio State | 10 | 10 | 10 | 30 | MHE |
| Georgia Tech | North Carolina B | 10 | 0 | 10 | 20 | ME |
| Illinois A | RIT | 10 | 10 | 10 | 30 | MHE |
| Iowa State | Florida | 0 | 0 | 10 | 10 | E |
| MIT | Illinois B | 10 | 0 | 10 | 20 | ME |
| Minnesota | Columbia A | 0 | 0 | 10 | 10 | E |
| North Carolina A | Ottawa | 0 | 0 | 10 | 10 | E |
| Northwestern | Johns Hopkins | 10 | 10 | 10 | 30 | MHE |
| Penn State | Chicago B | 0 | 0 | 10 | 10 | E |
| Stanford | UCF | 10 | 10 | 10 | 30 | MHE |
| Toronto B | British Columbia | 10 | 0 | 10 | 20 | ME |
| Toronto C | Rutgers | 10 | 0 | 10 | 20 | ME |
| UC Berkeley A | Waterloo B | 10 | 0 | 10 | 20 | ME |
| UC Berkeley B | Virginia Tech | 0 | 0 | 10 | 10 | E |
| Vanderbilt | Maryland | 0 | 0 | 10 | 10 | E |
| WUSTL A | Cornell B | 0 | 0 | 10 | 10 | E |
| Waterloo A | Cornell A | 10 | 0 | 10 | 20 | ME |
| Winona State | WUSTL B | 0 | 0 | 10 | 10 | E |
| Yale | Indiana | 0 | 0 | 10 | 10 | E |
Summary
| Tournament | Exact Match? | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|
| 2025 ACF Nationals | Yes | 21 | 17.62 | 100% | 52% | 24% |