Look up molar mass, atomic number, and calculate total mass.
To calculate mass from moles:
The calculator displays the element's molar mass (g/mol), atomic number, and calculates the total mass in grams.
Mass-mole relationship:
Total Mass (g) = Molar Mass (g/mol) × Number of Moles
Molar mass is the mass of one mole (6.022 × 10²³ atoms) of an element, numerically equal to its atomic mass in amu.
Example: Calculate the mass of 2 moles of Iron (Fe).
55.845 × 2 = 111.69 gMolar mass is the mass of one mole of a substance in grams per mole (g/mol). One mole equals 6.022 × 10²³ particles (Avogadro's number). For elements, the molar mass numerically matches the atomic mass shown on the periodic table.
Molar mass is essential for converting between grams and moles in stoichiometry. It lets you calculate how much of a substance to measure for a reaction, determine yields, and balance equations with real quantities.