Question
In food science, data from points in this region are fed directly to partial least squares to quantitatively distinguish oils and other lipids. For 10 points each:
[10m] Name this analytical region dominated by low-energy peaks corresponding to complex skeletal motions.
ANSWER: fingerprint region [prompt on mid-infrared or mid-IR]
[10h] Peaks from this in-plane motion dominate the right side of the fingerprint region. A large number of methylene units can undergo this kind of vibration, producing the “long chain band” at 720 inverse centimeters.
ANSWER: rocking
[10e] Broadband IR sources remain popular in part due to the “terahertz gap,” which has made it difficult to obtain suitable examples of these devices with collated monochromatic output.
ANSWER: infrared lasers [or light amplification by stimulated emission of radiation]
<Chemistry>
Summary
| 2024 ACF Nationals | 2024-04-21 | Y | 17 | 16.47 | 100% | 65% | 0% |
Data
| Berkeley B | Harvard | 10 | 0 | 10 | 20 |
| Purdue | Chicago A | 10 | 0 | 10 | 20 |
| Texas | Chicago B | 10 | 0 | 10 | 20 |
| Kentucky | Chicago C | 10 | 0 | 10 | 20 |
| Cornell A | Columbia A | 10 | 0 | 10 | 20 |
| Berkeley A | Illinois | 10 | 0 | 10 | 20 |
| WUSTL A | Indiana | 0 | 0 | 10 | 10 |
| Iowa State | Brown | 10 | 0 | 10 | 20 |
| Johns Hopkins | Toronto A | 10 | 0 | 10 | 20 |
| Maryland | Yale A | 0 | 0 | 10 | 10 |
| NYU | Georgia Tech | 0 | 0 | 10 | 10 |
| Minnesota A | North Carolina A | 10 | 0 | 10 | 20 |
| Northwestern | Michigan | 10 | 0 | 10 | 20 |
| Penn | Toronto B | 10 | 0 | 10 | 20 |
| Cornell B | Truman State | 0 | 0 | 10 | 10 |
| Rutgers | Virginia | 0 | 0 | 10 | 10 |
| Stanford | Waterloo | 0 | 0 | 10 | 10 |