Find the mass of 2,4,6-trinitrophenol, which is formed during the nitration of 37.6 grams of phenol.

Chemical equation of phenol nitration:
C6H5OH + 3HNO3 = C6H2 (NO2) 3OH + 3H2O.
Molar mass of phenol:
12 * 6 + 1 * 6 + 16 = 94 (g / mol).
The amount of reacted C6H5OH:
37.6 / 94 = 0.4 (mol).
It can be seen from the reaction equation that the amount of trinitrophenol formed is equal to the amount of phenol reacted.
Molar mass of 2,4,6-trinitrophenol:
12 * 6 + 1 * 3 + 16 + (14 + 16 * 2) * 3 = 229 (g / mol).
Mass C6H5 (NO2) 3OH:
229 * 0.4 = 91.6 (g).
The answer is 91.6 g.