MAKE IT YOURS
A world for every learner
Choose a grade to discover its colours and creative world.
Grade 11 Moles & Molar Mass Worksheet with Answers
Grade 11 (US) · Year 12 (UK) · Class 11 (India) · Chemistry
Unit 2: StoichiometryMoles & Molar MassNGSS HS-PS1-7
Calculating molar mass and converting between grams and moles. This free high school worksheet has 12 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.
- Answer keys checked by code
- No ads, ever
- No student accounts needed
- Safety & privacy
Practice Sheetaethelsystems.comMoles & Molar Mass
Grade 11 · Chemistry
Name
Class
Date
Learning goal: Moles & Molar Mass · NGSS HS-PS1-7
Directions: Read each question carefully and write your answer on the line. Use the diagram to help you.
What is the molar mass of MgO (magnesium oxide)? (Mg = 24, O = 16)
Answer: 40 g/mol
RememberChemistry tool kit
- 1
What is the mass of 5 mol of CO₂? (C = 12, O = 16)
- 2
What is the molar mass of H₂O (water)? (H = 1, O = 16)
- 3
How many moles are in 372.5 g of KCl? (K = 39, Cl = 35.5)
- 4
How many moles are in 175.5 g of NaCl? (Na = 23, Cl = 35.5)
- 5
What is the mass of 1 mol of H₂SO₄? (H = 1, S = 32, O = 16)
- 6
What is the mass of 2 mol of O₂? (O = 16)
- 7
How many moles are in 98 g of H₂SO₄? (H = 1, S = 32, O = 16)
- 8
How many moles are in 400 g of CaCO₃? (Ca = 40, C = 12, O = 16)
- 9
How many moles are in 80 g of MgO? (Mg = 24, O = 16)
- 10
What is the molar mass of NaOH (sodium hydroxide)? (Na = 23, O = 16, H = 1)
- 11
How many moles are in 80 g of NaOH? (Na = 23, O = 16, H = 1)
- 12
How many moles are in 200 g of NaOH? (Na = 23, O = 16, H = 1)
★ Challenge corner for fast finishers
Why does your breath make fog on a cold window?
How did I do?
Teacher's comments
Free printable worksheets with answer keys · aethelsystems.com/worksheets/chemistry/11/molar_mass
Answer key — Moles & Molar Mass (Grade 11)
- 1.220 g
- 2.18 g/mol
- 3.5 mol
- 4.3 mol
- 5.98 g
- 6.64 g
- 7.1 mol
- 8.4 mol
- 9.2 mol
- 10.40 g/mol
- 11.2 mol
- 12.5 mol
- ★water vapor in your breath condenses on the cold glass
Answer key (click to show)
- 1.220 g
- 2.18 g/mol
- 3.5 mol
- 4.3 mol
- 5.98 g
- 6.64 g
- 7.1 mol
- 8.4 mol
- 9.2 mol
- 10.40 g/mol
- 11.2 mol
- 12.5 mol
- ★water vapor in your breath condenses on the cold glass (challenge corner)
Need another Moles & Molar Mass worksheet?
Generate unlimited fresh versions at easy, medium or hard difficulty, each with its own answer key. Free during our launch — no card needed.
Create a free accountHow to use this worksheet
- Use it for revision before a test, as homework, or as a timed practice set.
- Students can self-mark with the answer key and note which question types they got wrong.
- Generate several versions of the same topic for spaced practice in the weeks before an exam.
Related worksheets
More Grade 11 Chemistry worksheets
Can't find what you need? Tell us which worksheet to make next.
Frequently asked questions
Does this Grade 11 Moles & Molar Mass worksheet come with answers?
Yes. The full answer key is on this page, and it prints on its own page after the questions. Every answer is calculated or checked by code rather than written by an AI model, so the key is always correct.
How do I print it or save it as a PDF?
Click "Download PDF" to save a ready-to-print PDF with the answer key on the last page, or click "Print" to send the worksheet and answer key straight to your printer.
Can I get a different Moles & Molar Mass worksheet?
Yes. Create a free account to generate as many fresh Grade 11 Moles & Molar Mass worksheets as you like, at easy, medium or hard difficulty, each with its own answer key.
Is this worksheet free?
Yes. This worksheet is free to print, and Practice Sheet is free to use during our launch with no card needed.