Question
This species corresponds to the 45 peak when quantifying it using IRMS. Polarization is transferred onto this species to determine its chemical identity in a technique called DEPT. This is the lighter of two species whose concentration is diluted in the Suess effect. The use of this isotope's concentration to detect synthetic testosterone, adulterated food, and infer prehistoric diets comes from its different isotopic signatures in C3 and C4 (*) photosynthesis. Chemical shifts between 0 and 220 ppm are detected in a form of NMR using this isotope, the second most-common form after proton NMR. This stable isotope's natural ratio is 1.1%, and has one fewer neutron than a radioactive isotope with a half-life of 5700 years. For 10 points, name this isotope of Carbon that has seven neutrons. ■END■
Summary
2024 ARCADIA at Claremont | 2024-11-02 | Y | 3 | 100% | 0% | 0% | 92.67 |
2024 ARCADIA at Waterloo | 2024-11-09 | Y | 6 | 100% | 17% | 50% | 98.50 |
2024 ARCADIA at Illinois | 2024-11-09 | Y | 4 | 100% | 0% | 50% | 106.25 |
2024 ARCADIA at UC Berkeley | 2024-12-06 | Y | 2 | 100% | 0% | 100% | 125.00 |
2024 ARCADIA at Duke | 2024-12-06 | Y | 3 | 100% | 0% | 0% | 108.00 |
2024 ARCADIA at GT | 2024-12-06 | Y | 5 | 100% | 0% | 40% | 111.80 |
2024 ARCADIA at Warwick | 2024-12-06 | Y | 4 | 100% | 0% | 25% | 95.75 |
2024 ARCADIA at Florida Tech | 2024-12-06 | Y | 4 | 100% | 0% | 25% | 106.25 |
2024 ARCADIA Online | 2025-05-17 | Y | 1 | 100% | 0% | 100% | 128.00 |
Buzzes
Player | Team | Opponent | Buzz Position | Value |
---|---|---|---|---|
Shahar Schwartz | Berkeley Past | Berkeley A | 31 | -5 |
Benjamin Chapman | Toronto A | Waterloo Aspidistra | 48 | -5 |
Andrew Wang | Illinois Blue | Chicago A | 48 | -5 |
Hansen Jin | Berkeley B | Stanford | 50 | -5 |
Camden Williams | Toyota Tundra Turbos — Twisting Truths - Tackling Trivia - Taming Titans | In the Mood for Buzz | 53 | -5 |
James Wang | Ottawa Absolomabsolomabsolom | Waterloo Basic | 58 | 15 |
Shaun Iyer | Innovation Academy A | Milton | 64 | -5 |
Ethen Sun | Toronto B | Toronto Disband the Club 2k24 | 73 | 10 |
Shiva Tegulla | UCF A | UF A | 83 | 10 |
Yash Mandavia | Illinois Orange | Notre Dame | 84 | 10 |
Rachel Bentham | Cambridge B | LSE A | 84 | 10 |
Rasheeq Azad | North Carolina B | South Carolina | 86 | 10 |
Bill Zhao | UF B | UF C | 86 | 10 |
Matthew Westley | Purdue A | Chicago B | 86 | 10 |
Joel Dicker | Southampton | Imperial B | 86 | 10 |
Brendan Bethlehem | Cambridge A | LSE B | 86 | 10 |
Akshay Seetharam | Claremont | ALCU | 86 | 10 |
Will Alston | SGV Ventures | Anderson et al. | 86 | 10 |
Matthew Sumanen | Georgia Tech B | Georgia Tech A | 88 | 10 |
Yusuf Baig | McMaster ApocolocyntosisBidii | Carleton A | 89 | 10 |
Asha Basu | McGill A | Waterloo Cloze | 91 | -5 |
James Byrne | Bristol | Imperial A | 93 | -5 |
Zach Tseng | Georgia Tech D | Mississippi State | 100 | 10 |
Travis Tu | Jason et al. | U[C]SD | 106 | 10 |
Sanjay Shanmuga Perumal | Lambert | Johns Creek | 109 | -5 |
Thomas Glotfelty | Virginia Tech B | Virginia Tech C | 112 | 10 |
Michael Du | Waterloo Aspidistra | Toronto A | 115 | 10 |
Franklin Wu | Toronto Chestnut Rice and Kamehameha | Toronto Metropolitan A | 115 | -5 |
Alex Thomas | Georgia Tech C | Innovation Academy C | 115 | 10 |
Logan Mathis | SIUE | Purdue B | 115 | -5 |
Aidan Bernardo | Florida Tech | USF | 123 | -5 |
Vinu Harihar | Stanford | Berkeley B | 123 | 10 |
Noah Chin | Virginia Tech A | North Carolina A | 126 | 10 |
Swapnil Garg | Berkeley A | Berkeley Past | 127 | 10 |
Ezra Santos | Chicago A | Illinois Blue | 127 | 10 |
Paphon Susikakosol | Imperial A | Bristol | 127 | 10 |
Moses Kitakule | In the Mood for Buzz | Toyota Tundra Turbos — Twisting Truths - Tackling Trivia - Taming Titans | 128 | 10 |
Addison Wiggins | USF | Florida Tech | 128 | 10 |
Rivera Rivera | Valencia | UCF B | 128 | 0 |
Sophie Torres | UCF B | Valencia | 128 | 10 |
Ishan Joshi | Toronto Metropolitan A | Toronto Chestnut Rice and Kamehameha | 128 | 10 |
James Tang | Waterloo Cloze | McGill A | 128 | 10 |
Edward Kim | Johns Creek | Lambert | 128 | 10 |
Darren Kellis | Milton | Innovation Academy A | 128 | 10 |
Hayden Willett | Purdue B | SIUE | 128 | 10 |