The Formula Relating Actual Mass of an Atom/Molecule and L:
Ar = actual mass of one atom x Avogadro constant
Mr = actual mass of one molecule x Avogadro constant
Mr = actual mass of one molecule x Avogadro constant
Example:
The relative mass of Li-7 isotope is found to be 7.016 using a mass spectrometer. Calculate the mass of one atom.
Mass = Mr / L
Mr(Li-7) = 7.016
Mass of one atom = 7.016 / 6.023 x 10^23
Mass (Li-7) = 1.165 x 10^23 g
Mass = Mr / L
Mr(Li-7) = 7.016
Mass of one atom = 7.016 / 6.023 x 10^23
Mass (Li-7) = 1.165 x 10^23 g