The mass of one atom or molecule of a substance is given in
atomic mass units, also called Daltons (abbreviated D or Da). Thus
one molecule of water has a mass of 18.015 atomic mass units, or
18.015 Daltons. The atomic mass unit is defined such that one mole
of water weighs 18.015 g. Suppose a protein has a mass of 64 192
Daltons (or 64.192 kDa). What would be the mass of one mole of this
protein?