Calculate the atomic mass of element “X”, if it has 2 natura…

Calculate the atomic mass of element “X”, if it has 2 naturally occurring isotopes with the following masses and natural abundances:   Symbol              Isotope mass                                          % Abundance               X-45                      44.8776 amu                                       32.88%               X-47                      46.9443 amu                                       67.12%