Free Mass from Molarity Calculator
Calculate the mass of solute needed to prepare a solution of a given molarity and volume.
M
L
g/mol
Mass of Solute Needed
14.610 g
Moles Needed0.2500 mol
Mass of Solute Needed vs Desired Molarity
How to Calculate Mass from Molarity
Formula
mass = M × V × Mw
First find moles (M × V), then convert to grams by multiplying by molar mass.
Example Calculation
How many grams of NaCl (58.44 g/mol) for 500 mL of 0.5 M solution?
- 01Moles = 0.5 × 0.5 = 0.25 mol
- 02Mass = 0.25 × 58.44 = 14.61 g
Frequently Asked Questions
Learn More
Understanding Molarity
Learn what molarity is, how to calculate it, and why it matters in chemistry. Covers moles, liters, dilution, and step-by-step examples for preparing solutions.