Calculate in atomic mass units the mass of (a) a Li8\mathrm{Li}^{8}Li8 atom whose nucleus has the binding energy 41.3MeV41.3 \mathrm{MeV}41.3MeV (b) a C 10^{10}10 nucleus whose binding energy per nucleon is equal to 6.04MeV6.04 \mathrm{MeV}6.04MeV