Packet 6: Bonus 14
A quantity describing one type of these devices equals magnetic flux density squared times radius squared divided by two times acceleration voltage. For 10 points each:
[10h] Name these devices that can make particles travelling through them susceptible to resonant ejection. One type of these devices generates a corkscrew trajectory by applying a voltage to metal rods parallel to a source beam.
ANSWER: mass analyzers [accept quadrupole mass analyzers or ion trap mass analyzers or magnetic sector mass analyzers; accept BUT DO NOT REVEAL time-of-flight mass analyzers or TOF mass analyzers; prompt on ion traps with “ion traps are used to trap ions within what devices?”; prompt on mass spectrometers with “what part of the mass spectrometer?”]
[10m] One type of mass analyzer measures this quantity to determine the mass-to-charge ratio of a sample. This quantity acts as a proxy for the velocity of particles with the same kinetic energy.
ANSWER: time of flight [or TOF; prompt on time]
[10e] Samples travel through mass analyzers after undergoing this process, which is “soft” or “hard” depending on the degree of fragmentation. MALDI is a common protocol for this process in which a molecule becomes charged.
ANSWER: ionization [accept word forms like ionized; accept matrix-assisted laser desorption/ionization]
<KN, Chemistry> | NAFTA-Packet-6
| Heard | PPB | E % | M % | H % |
|---|---|---|---|---|
| 5 | 12.00 | 100% | 20% | 0% |
Conversion
Summary
| Tournament | Edition | Match | Heard | PPB | E % | M % | H % |
|---|---|---|---|---|---|---|---|
| 2026 NAFTA at Stanford | 01/17/2026 | ✕ | 4 | 17.50 | 100% | 75% | 0% |
| 2026 NAFTA at UBC | 01/17/2026 | ✕ | 2 | 15.00 | 100% | 50% | 0% |
| 2025 NAFTA Online | 02/14/2026 | ✕ | 4 | 15.00 | 100% | 50% | 0% |
| 2026 NAFTA at Vanderbilt | 02/14/2026 | ✕ | 3 | 16.67 | 100% | 67% | 0% |
| 2025 NAFTA at Toronto | 09/13/2025 | ✓ | 5 | 12.00 | 100% | 20% | 0% |
| 2025 NAFTA at Maryland | 09/27/2025 | ✕ | 5 | 16.00 | 100% | 60% | 0% |
| 2025 NAFTA at Harvard | 10/04/2025 | ✕ | 3 | 16.67 | 100% | 67% | 0% |
| 2025 NAFTA at Oxford | 10/11/2025 | ✕ | 4 | 12.50 | 100% | 25% | 0% |
| 2025 NAFTA at Chicago | 11/08/2025 | ✕ | 6 | 13.33 | 100% | 33% | 0% |
| 2025 NAFTA at Columbia | 11/08/2025 | ✕ | 5 | 16.00 | 100% | 60% | 0% |
| 2025 NAFTA at Richmond | 12/20/2025 | ✕ | 2 | 10.00 | 100% | 0% | 0% |