subtract two chemical formula

subtractElements subtracts one chemical formula from another.

Usage

subtractElements(x, y)

Arguments

x

character strings with chemical formula

y

character strings with chemical formula that should be subtracted from x

Value

character Resulting formula

Author

Michael Witting and Sebastian Gibb

Examples

subtractElements("C6H12O6", "H2O")
#> [1] "C6H10O5"

subtractElements("C6H12O6", "NH3")
#> [1] NA