Convert between grams, moles and particles using molar mass and Avogadro's number (6.02 × 10²³). There are 2 sheets here: mole conversions and more conversions. Pick one from the tray, print it, and add its answer key as a second page if you want one.
Worksheets
NameDate
Mole conversions
Use 1 mol = 6.02 × 10²³ particles. Atomic masses: Al 26.98 · C 12.01 · H 1.01 · N 14.01 · Na 22.99 · O 16.00.
How many molecules are in 3.9 mol of Al2O3?
How many molecules are in 4.8 mol of Al2O3?
How many moles are in 230.4 g of C2H6O?
What is the molar mass of CH4?
What is the mass of 5.4 mol of O2?
What is the molar mass of NH3?
How many moles are in 124 g of NaOH?
How many moles are in 900.9 g of C6H12O6?
Using these sheets
New problems gives the same kind of sheet with different numbers, so you can print one for class and another for homework.
The answer key matches the sheet on screen, including after you make new problems.
Sheets print on US Letter paper. On A4, choose “Fit to printable area” in the print dialog.
Questions
What grade are these mole conversions worksheets for?
They suit grades 10 to 12. Each sheet in the tray practices it a different way, so you can pick the one that fits.
Is there an answer key?
Yes. Tick “add the answer key as page 2” before printing, or turn on Answer key to check work on screen.
Can I print more than one version?
Yes. Press New problems for a fresh set of the same kind, then print again. The answer key changes with it.
Do I need an account to print?
No. The sheets print straight from this page, free, with no sign-up.