TIL that the molar gas volume can be written as 22.4 L/mol (old) OR 22.7 L/mol. The international standards union voted in 1982 (!!) to redefine 1atm as 100000 Pa instead of the original 101325 Pa.
I've been teaching almost 20 years and I've never heard this.
https://chemistry.stackexchange.com/a/185123
Question for actual chemists in the real world: which volume do you use?