Packet 3: Bonus 14
The time residence distribution characterizes these devices, which is a delta function in the “plug-flow” type of them. For 10 points each,
[10h] Name these devices. The presence of “dead zones” of stagnant fluid flow in these devices drastically reduces efficiency.
ANSWER: chemical reactors [accept Plug-flow Reactor; do NOT accept nuclear reactor]
[10e] The residence time distribution is a delta function in a PFR as this process doesn’t occur axially. In the lab, this process is commonly done with a rotating magnetic bar to homogenize a solution.
ANSWER: mixing [accept stirring]
[10m] For a CSTR, the time distribution function is proportional to this function of minus t over tau. In the Arrhenius equation’s common form, this operation is applied to minus E-sub-a over R T.
ANSWER: exponential function [accept e to the x or e to the minus x]
<Science - Chemistry, Rohan Ganeshan> | VAULT II Packet 03
| Heard | PPB | E % | M % | H % |
|---|---|---|---|---|
| 43 | 12.33 | 72% | 40% | 12% |
Conversion
Summary
| Tournament | Edition | Match | Heard | PPB | E % | M % | H % |
|---|---|---|---|---|---|---|---|
| VAULT II at Georgia Tech | 2026-01-24 | ✓ | 6 | 13.33 | 67% | 50% | 17% |
| Triangle Cup | 2026-03-13 | ✓ | 2 | 20.00 | 100% | 100% | 0% |
| VAULT II at Eden Prairie HS | 2026-03-13 | ✓ | 3 | 10.00 | 67% | 33% | 0% |
| VAULT II at McGill | 2026-03-13 | ✓ | 4 | 5.00 | 25% | 25% | 0% |
| VAULT II at UCSB | 2026-03-13 | ✓ | 5 | 16.00 | 80% | 80% | 0% |
| VAULT II Northern UK | 2026-04-24 | ✓ | 3 | 16.67 | 100% | 33% | 33% |
| VAULT II Southern UK | 2026-04-24 | ✓ | 4 | 15.00 | 100% | 25% | 25% |
| VAULT II at Harvard | 2026-04-30 | ✓ | 4 | 5.00 | 50% | 0% | 0% |
| VAULT II at MINT | 2026-06-19 | ✓ | 4 | 5.00 | 50% | 0% | 0% |
| VAULT II Stanford Online | 2026-07-17 | ✓ | 8 | 16.25 | 88% | 50% | 25% |