Proper noun
Somain
A commune in Nord department, Hauts-de-France, France.
Aluminium sulfate is made by reacting bauxite with sulfuric acid: : 2 Al O (OH) + 3 Hmain SOmain → Almain (SOmain )main + 4 Hmain O Sulfuric acid is also important in the manufacture of dyestuffs solutions. Source: Internet
Concentrations of oleum are either expressed in terms of % SOmain (called % oleum) or as % Hmain SOmain (the amount made if Hmain O were added); common concentrations are 40% oleum (109% Hmain SOmain ) and 65% oleum (114.6% Hmain SOmain ). Source: Internet
Native alumen from Melos appears to have been a mixture mainly of alunogen ( Almain (SOmain )main ·17H 2 O ) with alum and other minor sulfates. Source: Internet
Hydrochloric acid ( HCl ) and sulfuric acid ( Hmain SOmain ) are common examples. Source: Internet
Roasting converts the zinc sulfide concentrate to zinc oxide: citation :2 ZnS + 3 Omain → 2 ZnO + 2 SOmain The sulfur dioxide is used for the production of sulfuric acid, which is necessary for the leaching process. Source: Internet
Sulfur dioxide and sulfites ( SOmain ) are related to the unstable sulfurous acid (H 2 SO 3 ). Source: Internet