Question

Calculate the atomic mass of titanium. The five titanium isotopes have atomic masses and relative abundances of 45.953 amu (8.00%), 46.952 amu (7.30%), 47.948 amu (73.80%), 48.948 amu (5.50%), and 49.945 amu (5.40%)

Answer 1

(amu x fraction) + (amu x fraction) + (amu x fraction) + amu x fraction) + (amu x fraction).
Substitute each isotope and fraction abundance; e.g. (45.953*0.08) + (46.952*0.0730) etc etc etc = atomic mass.

Answer 2

124.71

Answer 3

47.867 amu

Answer 4

47.87

(47.89 with sig figs)