Talk:C4H10O4

Molecular weight[edit]

Question: why C₄H₁₀O₄ molar mass is 122.12 g/mol ?

I found the same value in NIST https://webbook.nist.gov/cgi/cbook.cgi?ID=149-32-6

But C₄=48.000,H₁₀=10.078,O₄=63.980 => 122.058 g/mol in total which is quite far from 122.12 g/mol. Weird. 2001:6B0:1:1041:19C6:6D31:551:BAFB (talk) 10:39, 28 November 2022 (UTC)[reply]