To begin-press "New Problem " and a chemical formula will appear.
Calculate the mass percents for all of the elements and enter them in the cells.
The results on the problem and a running total will appear in the table.
If you get a problem "incorrect", you should redo it and recheck your answer.
For ease of presentation, all masses are presented to four significant figures, even though the gaws (gram atomic weights) are often known to greater precision than that. Percents are also presented to three significant figures.
For this problem generator please include the PERCENT SIGN (%)
Pressing the "Show Answer" will display the solution and you will no longer be able submit an answer for that problem.
The javascripting that powers this practice problem generator
was produced by Professor George Wiger of California State University
Dominguez Hills.