Mass-to-mass stoichiometry with balanced equations and molar masses, plus mole conversions. There are 2 sheets here: mass to mass and mole conversions. Pick one from the tray, print it, and add its answer key as a second page if you want one.
Worksheets
NameDate
Mass to mass
Grams → moles → mole ratio → moles → grams. Atomic masses: Ag 107.87 · Al 26.98 · C 12.01 · Ca 40.08 · Cu 63.55 · Fe 55.85 · H 1.01 · Mg 24.31 · N 14.01 · O 16.00 · S 32.06.
2Mg + O2 → 2MgO. How many grams of MgO form from 87 g of O2?
2SO2 + O2 → 2SO3. How many grams of SO3 form from 72 g of O2?
Al2(SO4)3 + 3Ca(OH)2 → 2Al(OH)3 + 3CaSO4. How many grams of Al(OH)3 form from 30 g of Al2(SO4)3?
Cu + 2AgNO3 → Cu(NO3)2 + 2Ag. How many grams of Ag form from 20 g of AgNO3?
Fe2O3 + 3CO → 2Fe + 3CO2. How many grams of CO2 form from 84 g of CO?
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 stoichiometry 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.