Molarity Calculator
Find a solution's molarity from the mass dissolved and the volume — or the mass or volume needed for a target molarity.
Molarity
0.2 mol/L
- Mass of solute
- 5.844 g
- Volume of solution
- 500 mL
- Moles of solute
- 0.1 mol
- Molar mass of NaCl
- 58.44 g/mol
Show the work
Moles of solute
mol = mass ÷ molar mass
5.844 ÷ 58.44 = 0.1 mol
Volume in liters
L = mL ÷ 1,000
500 ÷ 1,000 = 0.5 L
Molarity = moles ÷ liters of solution
M = mol ÷ L
0.1 ÷ 0.5 = 0.2 mol/L
How it works
Molarity (mol/L) = (mass ÷ molar mass) ÷ volume in liters
Questions
- How does the molarity calculator work?
- Molarity (mol/L) = (mass ÷ molar mass) ÷ volume in liters.
- What do I need to enter?
- Solve for, Molar mass from, Formula, Molar mass, Mass of solute, Molarity, Volume of solution, Volume unit. Optional fields can be left blank.
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