Bonus
The molecular weight of a polymer is related to this quantity and its theoretical maximum according to the Flory–Fox equation. For 10 points each:
[10m] Name this quantity that is indicated by a change in the rate of thermal expansion in dilatometry. This temperature is indicated by a point on a graph’s x-axis where a steep slope in heat capacity begins.
ANSWER: glass-transition temperature [prompt on T-sub-g]
[10h] A paradox named for this scientist states that extrapolating the heat capacity of supercooled liquids below the glass-transition temperature results in a crystal–liquid entropy difference of zero. This scientist also discovered the hydrophobic effect.
ANSWER: Walter Kauzmann [or Walter J. Kauzmann; accept Kauzmann’s paradox]
[10e] Kauzmann’s solution to his own paradox is that liquids undergo this action before the Kauzmann temperature. This process is usually induced by adding a nucleation seed and results in materials with long-range order.
ANSWER: crystallization [accept recrystallization]
<Toronto B, Chemistry>
| Editions | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|
| 1 | 29 | 10.69 | 79% | 24% | 3% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| Brown A | Harvard B | 0 | 0 | 10 | 10 | E |
| Cambridge B | Cambridge D | 0 | 0 | 10 | 10 | E |
| Chicago A | Missouri S&T | 0 | 0 | 10 | 10 | E |
| Chicago B | Indiana B | 0 | 0 | 10 | 10 | E |
| Chicago C | WashU A | 0 | 0 | 10 | 10 | E |
| Chicago D | WashU B | 0 | 0 | 10 | 10 | E |
| Claremont A | UCSD | 10 | 0 | 0 | 10 | M |
| Columbia C | Vassar A | 10 | 0 | 10 | 20 | ME |
| Cornell B | George Washington A | 10 | 0 | 10 | 20 | ME |
| Dartmouth A | Brandeis A | 0 | 0 | 0 | 0 | |
| Georgia Tech C | Bruin A | 0 | 0 | 10 | 10 | E |
| Illinois C | Illinois B | 0 | 0 | 10 | 10 | E |
| John Jay College | Maryland B | 0 | 0 | 10 | 10 | E |
| MIT A | Brandeis B | 0 | 0 | 10 | 10 | E |
| Maryland A | Penn B | 0 | 0 | 0 | 0 | |
| Missouri | Indiana A | 0 | 10 | 10 | 20 | HE |
| NYU A | George Washington B | 10 | 0 | 0 | 10 | M |
| Oxford A | Warwick B | 10 | 0 | 10 | 20 | ME |
| Rutgers A | NYU B | 0 | 0 | 10 | 10 | E |
| Sheffield | Bristol | 10 | 0 | 10 | 20 | ME |
| TAMU | Texas A | 0 | 0 | 0 | 0 | |
| Texas B | ASU | 10 | 0 | 10 | 20 | ME |
| UBC | UW A | 0 | 0 | 10 | 10 | E |
| UC Berkeley A | UCLA | 0 | 0 | 10 | 10 | E |
| UC Berkeley B | Claremont B | 0 | 0 | 0 | 0 | |
| UW B | Alberta | 0 | 0 | 10 | 10 | E |
| Virginia A | Virginia Tech A | 0 | 0 | 10 | 10 | E |
| William & Mary | Liberty C | 0 | 0 | 10 | 10 | E |
| Yale A | Haverford A | 0 | 0 | 10 | 10 | E |
Summary
| Tournament | Edition | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|
| California | 2025-02-01 | 3 | 6.67 | 33% | 33% | 0% |
| Lower Mid-Atlantic | 2025-02-01 | 2 | 10.00 | 100% | 0% | 0% |
| Midwest | 2025-02-01 | 6 | 11.67 | 100% | 0% | 17% |
| Northeast | 2025-02-01 | 3 | 6.67 | 67% | 0% | 0% |
| Pacific Northwest | 2025-02-01 | 2 | 10.00 | 100% | 0% | 0% |
| South Central | 2025-02-01 | 2 | 10.00 | 50% | 50% | 0% |
| Southeast | 2025-02-01 | 1 | 10.00 | 100% | 0% | 0% |
| UK | 2025-02-01 | 3 | 16.67 | 100% | 67% | 0% |
| Upper Mid-Atlantic | 2025-02-01 | 7 | 11.43 | 71% | 43% | 0% |