Question
Chemists inexplicably draw vectors on these systems in the opposite direction as physicists. For 10 points each:
[10m] Name these physical systems. A “permanent” one established at a carbonyl (“car-buh-NEEL”) bond is responsible for the intermolecular attractive force between two ketones.
ANSWER: electric dipoles [or dipole moments; prompt on poles or polarity]
[10e] Since this is a chemistry bonus, the carbonyl dipole moment points from carbon to oxygen, in the direction of increasing this quantity. Oxygen rates 3.5 on this quantity’s Pauling scale.
ANSWER: electronegativity
[10h] If it reacts with this biological carbene, a carbonyl’s dipole moment vector flips. Cells need the pyro·phosphate form of this coenzyme, a nitrogen-sulfur ylide (“ILL-id”), to turn pyruvate into acetyl-CoA (“uh-SEE-till coh A”).
ANSWER: thiamine [or vitamin B1; or thiamine pyrophosphate or TPP; prompt on vitamin B or B vitamins; prompt on vitamins]
<Adam Silverman, Science - Chemistry> ~22799~ <Editor: Adam Silverman>
Data
Team | Opponent | Part 1 | Part 2 | Part 3 | Total |
---|---|---|---|---|---|
Barrington | Innovation Academy B | 0 | 10 | 0 | 10 |
Bloomington | Okemos | 0 | 10 | 0 | 10 |
Detroit Catholic Central A | Seven Lakes | 0 | 10 | 0 | 10 |
Detroit Catholic Central C | Heights | 0 | 10 | 0 | 10 |
Durham AT | Owensboro | 10 | 10 | 0 | 20 |
Hastings | Walter Payton A | 0 | 10 | 0 | 10 |
Hunter A | Georgetown Day | 10 | 10 | 0 | 20 |
Kinkaid | Cincinnati Hills | 10 | 10 | 0 | 20 |
Lightridge | Belmont | 10 | 10 | 0 | 20 |
Livingston B | Innovation Academy A | 0 | 10 | 0 | 10 |
Maggie Walker B | Lambert | 0 | 10 | 0 | 10 |
Richard Montgomery A | Lindbergh | 10 | 10 | 0 | 20 |
St. Mark's | Northmont B | 0 | 10 | 0 | 10 |
Stevenson A | Carbondale | 0 | 10 | 0 | 10 |
Stevenson B | Solon | 0 | 10 | 0 | 10 |
Thomas Jefferson C | Canyon Crest | 0 | 10 | 0 | 10 |
Summary
Tournament | Edition | Exact Match? | Heard | PPB | Easy % | Medium % | Hard % |
---|---|---|---|---|---|---|---|
2024 PACE NSC | 06/08/2024 | Y | 16 | 13.13 | 100% | 31% | 0% |