Compute the molar mass associated to a chemical formula.

formula2mass(form, sum.mass = TRUE)

## Arguments

form a character string containing a chemical formula on the form: 'C3 H5 N O1'. logical, should the mass of each element be summed.

## Details

Compute the molar mass (in g.mol-1) associated to a chemical formula.

## Value

Return a single element numeric vector containing the mass corresponding to a given chemical formula.

## Author

Lars Skjaerven

atom2ele, atom2mass
#formula2mass("C5 H6 N O3")