Packet 4: Bonus 2
Forensic chemists may use the “Fourier transform” variety of a technique named for this regime to identify drugs. For 10 points each:
[10m] Name this regime of the electromagnetic spectrum. A hydroxyl group exhibits a broad peak around 3300 inverse centimeters in a form of spectroscopy named for this regime of wavelengths.
ANSWER: infrared [or IR; accept Fourier transform infrared spectroscopy or FTIR spectroscopy; accept near-infrared or near-IR; accept mid-infrared or mid-IR; accept far-infrared or far-IR]
[10e] Another technique used by forensic chemists is mass spectrometry, which analyzes compounds by their ratio of mass to this quantity. Ionizing an atom gives it a non-zero value for this quantity, which is measured in coulombs.
ANSWER: electric charge [accept mass-to-charge ratio]
[10h] A gold standard in forensic analysis is the combination of mass spectrometry with this other technique. This technique incorporates a flame ionization detector and a purge-and-trap system to remove volatile chemicals.
ANSWER: gas chromatography [or GC; or vapor-phase chromatography or VPC; or gas-liquid partition chromatography or GLPC; accept gas chromatography-mass spectrometry or GC-MS; prompt on chromatography]
<Edinburgh A, Chemistry> | Packet D
| Editions | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|
| 2 | 100 | 18.70 | 95% | 69% | 23% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| Claremont A | UCLA E | 10 | 10 | 0 | 20 | ME |
| UC Irvine | UCSD A | 10 | 10 | 0 | 20 | ME |
| UC Santa Barbara | Claremont C | 0 | 10 | 0 | 10 | E |
| UCLA C | UCLA A | 10 | 10 | 0 | 20 | ME |
| UCLA D | USC A | 10 | 10 | 0 | 20 | ME |
| UCSD B | Claremont B | 10 | 10 | 0 | 20 | ME |
| USC B | UCLA F | 0 | 10 | 0 | 10 | E |
Summary
| Tournament | Edition | Exact Match? | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|---|
| UK (North) | UK | Y | 5 | 24.00 | 100% | 80% | 60% |
| Northern California | US | Y | 4 | 20.00 | 100% | 75% | 25% |
| Southern California | US | Y | 7 | 17.14 | 100% | 71% | 0% |
| Eastern Canada (1) | US | Y | 5 | 20.00 | 80% | 80% | 40% |
| Florida | US | Y | 4 | 10.00 | 100% | 0% | 0% |
| Great Lakes | US | Y | 10 | 21.00 | 90% | 80% | 40% |
| Lower Mid-Atlantic | US | Y | 9 | 21.11 | 89% | 89% | 33% |
| Upper Mid-Atlantic | US | Y | 9 | 18.89 | 100% | 89% | 0% |
| North | US | Y | 4 | 17.50 | 100% | 25% | 50% |
| Northeast | US | Y | 12 | 19.17 | 92% | 75% | 25% |
| Pacific | US | Y | 8 | 20.00 | 100% | 75% | 25% |
| South Central | US | Y | 6 | 16.67 | 83% | 67% | 17% |
| Southeast | US | Y | 12 | 16.67 | 100% | 58% | 8% |
| Upstate NY | US | Y | 5 | 16.00 | 100% | 40% | 20% |