Select elements from the list and position them in the "Elements"
column by clicking the radio button. Then fill in one of the columns
"at%" or "wt%" with the data you want to convert.
Push the button below the column. The result will appear in the
If you do not agree with the offered value for the atomic weight,
you may change it.
If you do not enter numbers you will receive the NaN
(Not a Number) result.
* Fields necessary to fill in.
**Output fields that are not taken into account.