This drill gives practice in calculating the molar mass of a compound. To begin, press "New Compound" and a chemical formula will appear. Calculate the gfw (molar mass), enter it in the answer cell and press "Check
Answer." The results and a running total will appear. If you get a problem "incorrect", redo it and recheck your
answer. Note that all gfws are presented to four significant figures. Pressing "Show Answer" will display the solution and you will no longer be able to submit an answer for that problem.