Packet B: Bonus 16
This condition names a type of chemical reactor that is characterized by parabolic velocity profiles as particles travel in parallel. For 10 points each:
[10e] What condition, largely absent in plug-flow reactions, involves minimal mixing and is contrasted with turbulent flow?
ANSWER: laminar flow [or laminar flow reactor; accept laminar regime; accept streamline flow]
[10h] For LFRs, this quantity’s namesake distribution is equal to tau squared over two times this quantity cubed and is generally a broad peak. Dye tracers are usually “pulsed” into reactors to determine this quantity.
ANSWER: residence time [or mean residence time; accept residence time distribution or RTD; accept transit time; accept retention time; accept space time; accept E(t); accept exit stage distribution; accept age distribution; prompt on time or t]
[10m] LFRs are useful for determining this other quantity using mean residence time, concentration, and the first Damköhler number. For a first-order reaction, this quantity is equal to the natural log of two divided by half-life.
ANSWER: reaction rate constant [or reaction rate coefficient; prompt on k; reject “rate”]
<Queens A, Chemistry> | Packet B - Queens A, UCLA B, Edinburgh B, St. Georges A
| Heard | PPB | E % | M % | H % |
|---|---|---|---|---|
| 62 | 14.03 | 94% | 37% | 10% |
Conversion
Summary
| Tournament | Edition | Match | Heard | PPB | E % | M % | H % |
|---|---|---|---|---|---|---|---|
| California (North) | Main Site | ✓ | 3 | 16.67 | 100% | 67% | 0% |
| Canada | Main Site | ✓ | 10 | 14.00 | 90% | 40% | 10% |
| Florida | Main Site | ✓ | 2 | 10.00 | 100% | 0% | 0% |
| Great Lakes | Main Site | ✓ | 5 | 14.00 | 80% | 40% | 20% |
| Lower Mid-Atlantic | Main Site | ✓ | 8 | 13.75 | 100% | 38% | 0% |
| Midwest | Main Site | ✓ | 5 | 18.00 | 100% | 20% | 60% |
| Northeast | Main Site | ✓ | 3 | 20.00 | 100% | 100% | 0% |
| Overflow | Main Site | ✓ | 4 | 15.00 | 100% | 50% | 0% |
| South Central | Main Site | ✓ | 1 | 10.00 | 100% | 0% | 0% |
| Southeast | Main Site | ✓ | 6 | 11.67 | 100% | 17% | 0% |
| UK | Main Site | ✓ | 5 | 12.00 | 80% | 40% | 0% |
| Upper Mid-Atlantic | Main Site | ✓ | 7 | 11.43 | 86% | 14% | 14% |
| Upstate NY | Main Site | ✓ | 3 | 16.67 | 100% | 67% | 0% |