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Concentration Worksheets — mol/L to g/L (Free Printable)

Solution concentration links moles per liter to grams per liter through molar mass. These worksheets drill mol/L ↔ g/L for common substances, so students see that concentration is just moles scaled by mass. Pair them with the UnitFig unit converters to check the arithmetic.

Sample problems (new ones below)

Convert 8 mol/L O₂ to g/L → 256.00 g/LConvert 166 g/L NaCl to mol/L → 2.841 mol/LConvert 3 mol/L H₂O to g/L → 54.05 g/LConvert 8 mol/L CO₂ to g/L → 352.08 g/LConvert 212 g/L O₂ to mol/L → 6.625 mol/LConvert 2 mol/L H₂O to g/L → 36.03 g/LConvert 34 g/L O₂ to mol/L → 1.063 mol/LConvert 189 g/L NaCl to mol/L → 3.234 mol/LConvert 11 g/L CH₄ to mol/L → 0.686 mol/LConvert 226 g/L CO₂ to mol/L → 5.135 mol/LConvert 264 g/L H₂O to mol/L → 14.654 mol/LConvert 139 g/L CO₂ to mol/L → 3.158 mol/LConvert 7 mol/L H₂O to g/L → 126.11 g/LConvert 59 g/L NaCl to mol/L → 1.010 mol/LConvert 6 mol/L NaCl to g/L → 350.64 g/LConvert 146 g/L H₂O to mol/L → 8.104 mol/LConvert 295 g/L O₂ to mol/L → 9.219 mol/LConvert 5 mol/L NaCl to g/L → 292.20 g/LConvert 7 mol/L CH₄ to g/L → 112.28 g/LConvert 273 g/L NaCl to mol/L → 4.671 mol/LConvert 160 g/L CH₄ to mol/L → 9.975 mol/LConvert 67 g/L O₂ to mol/L → 2.094 mol/LConvert 149 g/L CH₄ to mol/L → 9.289 mol/LConvert 7 mol/L NaCl to g/L → 409.08 g/L

Worksheet controls

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Chemistry concentration
Name: _______________  ·  Date: _______________
unitfig.com/math-worksheets/chemistry-concentration · free printable
1.Convert 277 g/L H₂O to mol/L
2.Convert 178 g/L CO₂ to mol/L
3.Convert 3 mol/L O₂ to g/L
4.Convert 162 g/L CH₄ to mol/L
5.Convert 64 g/L CH₄ to mol/L
6.Convert 155 g/L NaCl to mol/L
7.Convert 6 mol/L CH₄ to g/L
8.Convert 3 mol/L H₂O to g/L
9.Convert 1 mol/L CO₂ to g/L
10.Convert 293 g/L CO₂ to mol/L
11.Convert 176 g/L NaCl to mol/L
12.Convert 92 g/L CH₄ to mol/L
13.Convert 202 g/L NaCl to mol/L
14.Convert 84 g/L CH₄ to mol/L
15.Convert 2 mol/L CO₂ to g/L
16.Convert 41 g/L NaCl to mol/L
17.Convert 172 g/L H₂O to mol/L
18.Convert 7 mol/L O₂ to g/L
19.Convert 200 g/L O₂ to mol/L
20.Convert 56 g/L O₂ to mol/L
21.Convert 222 g/L CH₄ to mol/L
22.Convert 268 g/L CH₄ to mol/L
23.Convert 5 mol/L CH₄ to g/L
24.Convert 76 g/L NaCl to mol/L
Answer Key
1. 15.376 mol/L(Multiply/divide by molar mass (18.015 g/mol).)
2. 4.045 mol/L(Multiply/divide by molar mass (44.01 g/mol).)
3. 96.00 g/L(Multiply/divide by molar mass (32 g/mol).)
4. 10.100 mol/L(Multiply/divide by molar mass (16.04 g/mol).)
5. 3.990 mol/L(Multiply/divide by molar mass (16.04 g/mol).)
6. 2.652 mol/L(Multiply/divide by molar mass (58.44 g/mol).)
7. 96.24 g/L(Multiply/divide by molar mass (16.04 g/mol).)
8. 54.05 g/L(Multiply/divide by molar mass (18.015 g/mol).)
9. 44.01 g/L(Multiply/divide by molar mass (44.01 g/mol).)
10. 6.658 mol/L(Multiply/divide by molar mass (44.01 g/mol).)
11. 3.012 mol/L(Multiply/divide by molar mass (58.44 g/mol).)
12. 5.736 mol/L(Multiply/divide by molar mass (16.04 g/mol).)
13. 3.457 mol/L(Multiply/divide by molar mass (58.44 g/mol).)
14. 5.237 mol/L(Multiply/divide by molar mass (16.04 g/mol).)
15. 88.02 g/L(Multiply/divide by molar mass (44.01 g/mol).)
16. 0.702 mol/L(Multiply/divide by molar mass (58.44 g/mol).)
17. 9.548 mol/L(Multiply/divide by molar mass (18.015 g/mol).)
18. 224.00 g/L(Multiply/divide by molar mass (32 g/mol).)
19. 6.250 mol/L(Multiply/divide by molar mass (32 g/mol).)
20. 1.750 mol/L(Multiply/divide by molar mass (32 g/mol).)
21. 13.840 mol/L(Multiply/divide by molar mass (16.04 g/mol).)
22. 16.708 mol/L(Multiply/divide by molar mass (16.04 g/mol).)
23. 80.20 g/L(Multiply/divide by molar mass (16.04 g/mol).)
24. 1.300 mol/L(Multiply/divide by molar mass (58.44 g/mol).)

Teaching tips for concentration

  • •g/L = (mol/L) × molar mass (g/mol). The molar mass converts the counting unit (mol) into a mass unit (g).
  • •Keep track of per-liter: both units are "per liter", so the liter never enters the conversion — only mol ↔ g does.
  • •Use the same molar masses as the moles sheets (H₂O 18.015, NaCl 58.44, CO₂ 44.01, O₂ 32.0, CH₄ 16.04 g/mol).

Common mistakes to watch for

✗ Forgetting to multiply by molar mass.
✓ mol/L alone is a count; g/L is that count expressed as mass. The step mol/L × M (g/mol) = g/L is required.
✗ Confusing mol/L with total moles.
✓ Both mol/L and g/L are concentrations (per liter). The conversion stays "per liter"; you never multiply or divide by a volume here.

Check your answers with the tools

Browse all converters →Quick conversion charts →

Grade & standards alignment

These concentration worksheets target the Grades 9–10 band of the Common Core State Standards for Mathematics (CCSSM). The relevant CCSS math domains are:

Physical Science — Solutions & Concentration

Source: Common Core State Standards for Mathematics (2010). National Governors Association Center for Best Practices (NGA Center) & Council of Chief State School Officers (CCSSO). Retrieved 2026-08-11 from https://www.corestandards.org/Math/.

The CCSSM are public, open-license standards; this alignment is provided for planning and is not an official endorsement by the standards authors.

How these worksheets are built (accuracy & trust)

  • •Problems are generated by a deterministic engine using exact integer and rational arithmetic — answers are reduced to lowest terms and never rely on floating-point rounding, so they match the matching UnitFig converter.
  • •Grade presets follow the CCSSM progression above; pick a grade to get age-appropriate number ranges.
  • •Content is reviewed for accuracy and refreshed each year (2026). Worksheet copy and examples are original and written for classroom use.

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UnitFig collects no personal information from children or any visitor. Worksheets run entirely in the browser: no account, no name or email, and student answers never leave the device. We follow a COPPA-aligned, zero-collection design so teachers and parents can use these sheets without a signup wall or privacy concern. See our Privacy Policy.

Frequently Asked Questions

How do I convert mol/L to g/L?

Multiply mol/L by the molar mass (g/mol): g/L = (mol/L) × M. The inverse divides g/L by M to get mol/L.

What substances are covered?

H₂O, NaCl, CO₂, O₂ and CH₄, using standard periodic-table molar masses.

What grade is concentration taught?

Molarity and concentration units appear in grade 9–10 high-school chemistry.

More worksheets

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Last Updated 2026 | Problems are algorithm-generated with the exact NIST/SI constants used by UnitFig converters. Answers are computed programmatically and can be verified with the matching converter.