Chemistry
Forgetting Units in Molarity Calculations
Students divide moles by milliliters and label the result as molarity.
Quick check
Why students make it
They remember that molarity means amount of solute over volume, but they forget that the volume unit is liters. The number may look reasonable, so the missing unit conversion is easy to miss.
The rule done right
Molarity is with in moles and in liters. Convert volume to liters first, and carry units so the final unit is or .
Related resources
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Chemistry, Dimensional Analysis Infographic -
Solutions & Concentration Infographic -
Chemistry, Dilution Calculations Infographic -
Stoichiometry Roadmap Infographic -
Mole Concept (Visual Conversions) Infographic - Dilution Calculations (M1V1 = M2V2) Cheat Sheet
- Solutions & Concentration Cheat Sheet
- Mole Conversion Roadmap Cheat Sheet
- Avogadro's Number and the Mole Concept Worked Examples Cheat Sheet
- Stoichiometry & Molar Mass Cheat Sheet
- Science, Solution Chemistry, Molarity and Concentration Worksheet
- Chemistry, Solution Chemistry, Molarity and Dilution Worksheet
- Science, The Mole and Avogadros Number Worksheet
- Science, Stoichiometry Calculations Worksheet
- Concentration Units Converter Tool
- Molarity & Dilution Calculator Tool
- Mole Converter & Gas Stoichiometry Tool
- Molar Mass & Stoichiometry Calculator Tool
- Serial Dilution & Standard Curve Lab Lab
- Titration Lab Lab
- Stoichiometry Lab Lab