Formula
The amount of substance in moles is:
mol = grams / (g/mol)
Molarity divides moles by liters. This page stops at moles.
Assumptions
- Mass is grams.
- Molar mass is grams per mole.
Worked example
36 g at 18 g/mol is 2 mol.
Input definitions
- Mass
- The sample mass in grams.
- Molar mass
- The mass of one mole of the substance.
Limitations
This is a classroom calculation. It is not a laboratory procedure, a wiring plan, or a measured instrument reading.
Questions
How do I find the molar mass?
Use the molecular-weight page for the elements in the list, or type a molar mass you already have.
Is this concentration?
No. Divide the moles by liters on the molarity page if you need mol/L.