Chemistry
Molarity Calculator
Find solution concentration in moles per litre.
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Molarity (M) is the most common way to express concentration: moles of solute per litre of solution.
The math behind it
molarity = moles of solute ÷ litres of solution.
Worked Example
0.5 mol in 2 L → 0.25 mol/L (0.25 M).
Frequently Asked Questions
Molarity vs molality?
Molarity is per litre of solution; molality is per kilogram of solvent (temperature-independent).
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