Question
An inert gas such as xenon is used to accomplish this task in fast atom bombardment. For 10 points each:
[10h] Identify this process, which follows matrix-assisted laser desorption in one technique. This process is classified as either “hard” or “soft” based on the amount of fragmentation.
ANSWER: ionization [accept word forms or equivalents like forming ions; accept matrix-assisted laser desorption/ionization or hard ionization or soft ionization]
[10e] Ionization is the first step of a form of spectrometry named for this quantity that measures its ratio to charge. Daltons are the unit used to report atoms’ value of this quantity instead of grams.
ANSWER: mass [accept mass spectrometry; reject “weight”]
[10m] The calutron, an early mass spectrometer, was designed to help separate this element’s isotopes. This element’s “depleted” form contains almost none of its 235 isotope.
ANSWER: uranium [or U; accept depleted uranium]
<Chemistry>
Summary
| 2024 ACF Fall at Cornell | fall | Y | 9 | 20.00 | 100% | 100% | 0% |
| 2024 ACF Fall at Ohio State | fall | Y | 8 | 20.00 | 75% | 100% | 25% |
| 2024 ACF Fall at Washington | fall | Y | 6 | 20.00 | 100% | 100% | 0% |
| 2024 ACF Fall at Georgia | fall | Y | 12 | 19.17 | 83% | 100% | 8% |
| 2024 ACF Fall at North Carolina | fall | Y | 9 | 18.89 | 89% | 100% | 0% |
| 2024 ACF Fall at Claremont Colleges | fall | Y | 5 | 22.00 | 100% | 100% | 20% |
| 2024 ACF Fall at Rutgers | fall | Y | 9 | 16.67 | 78% | 89% | 0% |
| 2024 ACF Fall at Illinois | fall | Y | 9 | 22.22 | 100% | 100% | 22% |
Data
| CWRU A (UG) | West Virginia A (UG) | 10 | 0 | 10 | 20 |
| CWRU B (DII) | Miami A (UG) | 0 | 10 | 10 | 20 |
| Jefferson County Scholars (DII) | Michigan C | 0 | 10 | 10 | 20 |
| Michigan A (UG) | Michigan B (UG) | 0 | 10 | 10 | 20 |
| Michigan State A | Michigan State B | 0 | 10 | 10 | 20 |
| Ohio State A (UG) | CWRU C (UG) | 10 | 0 | 10 | 20 |
| Ohio State B (DII) | Miami B (UG) | 0 | 10 | 10 | 20 |
| Michigan D (UG) | West Virginia B (UG) | 0 | 10 | 10 | 20 |