Question
These substances are regenerated by combustion after a layer of carbon inactivates or “cokes” them. In a packed bed, these substances are ground into pellets and immobilized on porous alumina or silica supports. The main unit operation at an oil refinery uses these substances to crack petroleum. Zeolites act as adsorbents and as these substances, which are powdered to increase their specific (*) surface areas. Per gram, the most expensive chemicals in a reactor are usually these solids, especially noble metals like rhodium. Platinum acts as a heterogeneous example of these substances in the device that converts the CO in car exhaust to CO2. For 10 points, name these substances that reduce activation energy and speed up chemical reactions. ■END■
Summary
2023 PACE NSC | 06/10/2023 | Y | 35 | 100% | 31% | 0% | 82.00 |
Buzzes
Player | Team | Opponent | Buzz Position | Value |
---|---|---|---|---|
Shreyas Singh | University Lab | Maggie Walker A | 46 | 20 |
Aneesh Swaminathan | Plymouth | Woodland | 47 | 20 |
Sohum Sukhatankar | St. Mark's | Dunbar | 48 | 0 |
Alec Riso | Thomas Jefferson B | Dallas County | 50 | 20 |
Yashwanth Bajji | Troy | Kinkaid | 50 | 20 |
Aaryan Sumesh | Thomas Jefferson C | Thomas Jefferson D | 50 | 20 |
Armaan Ahmed | Mercer County | Detroit Catholic Central C | 50 | 20 |
Dylan Cheng | Thomas Jefferson A | Canyon Crest | 52 | 20 |
Camden Williams | Mexico | Winston Churchill B | 53 | 0 |
Kyunghwan Lim | Chattahoochee A | Lincoln-Way East | 53 | 20 |
Tanay Bodducherla | Mira Loma | Detroit Country Day | 54 | 20 |
Joseph Chen | Richard Montgomery | Rockford Auburn A | 55 | 20 |
Jacob Barta | Detroit Catholic Central A | Barrington A | 60 | 20 |
Dillan Rinehart | Winnebago | Midtown | 63 | 0 |
Devesh Kumar | Maggie Walker B | Innovation Academy B | 63 | 10 |
Grace Nuckolls | Washington | Cincinnati Hills Christian | 63 | 10 |
Andy Yu | Winston Churchill A | Belmont | 64 | 0 |
Liam Reed | Maggie Walker C | Choate Rosemary Hall | 75 | 10 |
Matthew Kohn | Hunter A | Solon | 81 | 10 |
Kaiwen Xiao | Irvington A | Chattahoochee B | 82 | 10 |
Isaac McCollum | Hoover B | Moberly | 85 | 10 |
Adhav Ravikumar | Innovation Academy A | Hinsdale Central | 85 | 10 |
Kevin Adler | Northmont B | Saint Joseph | 85 | 10 |
Owen Gibbs | Heights | Carbondale | 86 | 10 |
Aryan Pathak | Lake Highland | Norris | 86 | 10 |
Karl Barnickol | Walter Payton | Northmont A | 89 | 10 |
Aakash Sanjay | Johns Creek A | William Fremd | 90 | 10 |
Hari Veginati | Stevenson A | Carl Sandburg | 90 | 10 |
Owen Arneson | Parkway West | New Brighton | 102 | 10 |
Jonathan Tao | Stevenson B | John Adams A | 102 | 10 |
David Bertolasi | Belvidere | Detroit Catholic Central B | 110 | 10 |
Kaushik Gollamudi | Barrington B | Johns Creek B | 112 | 10 |
Brodie Henry | West Point | Rockford Auburn B | 112 | 10 |
Safal Sapkota | Elkhorn North | John Adams B | 113 | 0 |
Matthew Houston | Norman | Hunter B | 115 | 10 |
Charles Heydt | Midtown | Winnebago | 118 | 10 |
Colette Kendrick | Winston Churchill B | Mexico | 118 | 10 |
Omar Hamid | Dunbar | St. Mark's | 118 | 10 |
Ruthie Tan | John Adams B | Elkhorn North | 118 | 10 |
Sam Macchi | Belmont | Winston Churchill A | 118 | 10 |