Common Chemical Formulas
A curated set of the compounds that appear in nearly every chemistry course — each with an original explanation, molar mass breakdown, uses and the questions students actually ask. This is a hand-written collection, not an auto-generated database.
H2OWater18.015 g/mol · dihydrogen monoxideCO2Carbon dioxide44.009 g/mol · carbonic acid gasNaClSodium chloride58.44 g/mol · table saltCaCO3Calcium carbonate100.09 g/mol · limestoneC6H12O6Glucose180.16 g/mol · dextroseH2SO4Sulfuric acid98.072 g/mol · oil of vitriolNH3Ammonia17.031 g/mol · azaneCH4Methane16.043 g/mol · natural gasO2Oxygen gas31.998 g/mol · dioxygenHClHydrochloric acid36.458 g/mol · muriatic acid