Work out the molarity of a solution from the mass of solute, its molar mass and the volume of solution. Type a formula such as NaOH instead of a molar mass and the calculator finds it for you.
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From the article Molarity Formula Explained: Definition, Units and Solved Examples.
5.85 g of NaCl is dissolved and made up to 500 mL of solution. Find the molarity.
Molar mass of NaCl = 22.990 + 35.45 = 58.44 g mol⁻¹
n = 5.85 ÷ 58.44 = 0.1001 mol
V = 500 mL = 0.500 L
M = 0.1001 ÷ 0.500 = 0.200 mol L⁻¹ (0.200 M)
Worked in full in Molarity Formula Explained: Definition, Units and Solved Examples.
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