The rest masses of a proton, neutron, and electron are 1.67262171 _10 -27 kg, 1.67492728 _10 -27..

The rest masses of a proton, neutron, and electron are
1.67262171 _10_27kg, 1.67492728 _10_27kg,
and 9.1093826 _10_31kg, respectively

(a) The atomic mass unit (amu) is defined as one twelfth of
the actual mass of a carbon-12 atom (as a neutral atom in its nuclear and
electronic ground state). The mass of a carbon-12 atom is less than the sum of
the masses of its constituents; the difference is the mass defect. Calculate
the mass defect (in kg or amu).

(b) The binding energy is the energy equivalent to the mass
defect. What is the binding energy of carbon-12?