Citric acid
File sealed
The detectives are still writing this one up. The poster and the facts are below; the film and the interrogation room open soon.
Booking photographs
The suspect, from its real atomic coordinates. Drag to turn it. Height chart in nanometers, ruled every 0.05 nm. A lemon is about a hundred million times taller.
Rap sheet
- Answers to
- Citric acid. “Sour salt” at the grocery store.
- Height
- 0.75 nm, standing up.
- Weight
- 0.32 zeptograms
- Build
- Three acid groups on one small frame. Triple sour.
- Associates
- Baking soda. Together they fizz.
- Known for
- Your cells burn food on a wheel of reactions named after it.
- Origins
- Lemons, limes, and these days mostly a mold fed on sugar.
- First seen
- Crystallized out of lemon juice by a Swedish chemist.
- Last seen
- A 5 mL tube marked LEMON in the fridge at HQ.
of them in a tablespoon of lemon juice, give or take.
Lemons vary. You’ve never seen one.
The poster on the street
This is the photocopied wanted poster for Citric acid, No. 64. They were made for noticeboards around Boston, Cambridge and the rest of the east coast.
Found one? Scan its QR code with your phone. If you're a signed-in player, the sighting goes on your record with +1 XP.
Not a player yet? Join the Epic Quest: the real role-playing game of Molecular Reality, a nanopore lab, with the CEO as gamemaster.