Atomic Mass Unit
Table of Contents Atomic Mass Unit One atomic mass
unit is defined as a mass exactly equal to one twelfth the mass of one
carbon -12 atom. And 1 amu = 1.66056×10 –24 g. Today, ‘amu’ has
been replaced by ‘u’ which is known as unified mass. Atomic Mass Atomic mass of an
element is defined as the average relative mass of an atom of an element
as compared to the mass of an atom of carbon -12 taken as 12. Gram Atomic Mass The quantity of an
element whose mass in grams is numerically equal to its atomic mass. In
simple terms, atomic mass of an element expressed in grams is the gram
atomic mass or gram atom. For example, the atomic mass
of oxygen = 16 amu Therefore gram atomic mass of oxygen = 16 g Molecular Mass Molecular mass of
a substance is defined as the average relative mass of its molecule as
compared to the mass of an atom of C-12 taken as 12. It expresses as to how
many times the molecule of a substance is heavier than 1/12th of the mass
of an atom of carbon. For example, a
mole…