Mole Calculator
Convert between grams, moles, and number of molecules using Avogadro's number.
The Mole Calculator converts a given mass in grams to moles and number of molecules. The mole is the SI unit for amount of substance, and one mole contains exactly 6.022 x 10^23 particles (Avogadro's number).
Enter the mass of your sample in grams and its molar mass (g/mol). The calculator divides mass by molar mass to find moles, then multiplies by Avogadro's number to find the total number of molecules or atoms.
This conversion is essential for balancing chemical equations, calculating reagent quantities, and understanding the microscopic world of atoms and molecules.
Frequently Asked Questions
What is a mole in chemistry?
A mole is 6.022 x 10^23 particles of a substance. It bridges the gap between atomic-scale measurements and laboratory-scale quantities.
What is Avogadro's number?
Avogadro's number is 6.022 x 10^23, the number of atoms, molecules, or particles in one mole of a substance.
How do I convert grams to moles?
Divide the mass in grams by the molar mass (g/mol) of the substance. For example, 36.03 g of water / 18.015 g/mol = 2 moles.