Molecular weights {GCDkit} | R Documentation |
Calculates molecular weights for simple oxide formula(e).
molecularWeight(formula)
formula |
a character vector with formula(e) of the oxide(s). |
So far only simple oxide formulae in form of AxOy (where x, y are optional indexes)
can be handled. The atomic weights are stored in a file MW.data
in the main directory.
The atomic weights come from official CIAAW web site
https://www.ciaaw.org.
A list with items:
MW | molecular weight(s) |
x.atoms | number(s) of atoms in the formula |
x.oxygen | number(s) of oxygens |
Vojtěch Janoušek, vojtech.janousek@geology.cz and Vojtěch Erban, erban@sopky.cz
Commission on Isotopic Abundances and Atomic Weights (CIAAW) of the International Union of Pure and Applied Chemistry. Accessed on January 8, 2016, at https://www.ciaaw.org
molecularWeight("SiO2") molecularWeight("SiO2")[[1]] MW["SiO2"] MW[major] mw["Si"] oxides<-c("SiO2","TiO2","Al2O3","Fe2O3","FeO") sapply(oxides,molecularWeight)