Packet 4: Bonus 13
Various processes can be done to “capture” this greenhouse gas and store it underground. For 10 points each:
[10e] Name this gas, which makes up about 421 parts per million of the atmosphere and is released when humans exhale.
ANSWER: carbon dioxide [or CO2]
[10h] One way of “scrubbing” carbon dioxide from the air is using a compound with the formula C2H7NO, a form of ethanol with one of these functional groups attached. One of these groups is attached to a benzene ring in aniline (“AN-uh-lin”).
ANSWER: amines [or amino groups; accept primary amines or monoethanolamine; reject “amino acids”]
[10m] Another compound that absorbs CO2 is this element’s hydroxide salt, which has been used for that purpose in spacecraft. Other salts of this element are used to treat bipolar disorder.
ANSWER: lithium [or Li; accept lithium hydroxide or lithium carbonate]
<Chemistry — Andrew Gao> | SHOW-ME Four Packet 4
| Heard | PPB | E % | M % | H % |
|---|---|---|---|---|
| 26 | 17.69 | 96% | 50% | 31% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| DeWitt A | New Buffalo A | 10 | 0 | 10 | 20 | EM |
| DeWitt B | Grand Ledge | 10 | 0 | 0 | 10 | E |
| Detroit Catholic Central C | Rockford A | 10 | 10 | 0 | 20 | EH |
| Hillsdale Academy A | Detroit Catholic Central B | 10 | 0 | 10 | 20 | EM |
| Hillsdale Academy B | New Buffalo B | 0 | 0 | 0 | 0 | |
| Hillsdale Academy C | U of D Jesuit | 10 | 0 | 0 | 10 | E |
| Holt | Taylor | 10 | 0 | 0 | 10 | E |
| New Boston Huron | Chelsea | 10 | 0 | 0 | 10 | E |
| Okemos A | Detroit Country Day A | 10 | 0 | 0 | 10 | E |
| Rockford B | Detroit Country Day B | 10 | 0 | 10 | 20 | EM |
| Traverse City Central A | Coldwater | 10 | 0 | 10 | 20 | EM |
| Troy A | White Cloud B | 10 | 10 | 0 | 20 | EH |
| Troy B | Traverse City Central B | 10 | 0 | 0 | 10 | E |
| Utica Academy | Okemos B | 10 | 10 | 10 | 30 | EHM |
| White Cloud A | Hillsdale Academy D | 10 | 0 | 0 | 10 | E |
| Williamston | Detroit Catholic Central A | 10 | 10 | 0 | 20 | EH |
Summary
| Tournament | Edition | Match | Heard | PPB | E % | M % | H % |
|---|---|---|---|---|---|---|---|
| Rube Goldberg XIX | 11/20/2025 | ✓ | 16 | 15.00 | 94% | 31% | 25% |
| SHOW-ME Four Nationwide HS | 11/20/2025 | ✓ | 5 | 28.00 | 100% | 100% | 80% |
| SPOOKY IX | 11/20/2025 | ✓ | 5 | 16.00 | 100% | 60% | 0% |