The number of protons plus that number of neutrons equals the atomic number atomic mass atomic weight atomic neutrality

The number of protons plus the number of neutron equals the ATOMIC MASS.
An atom is made up of three different particles which are proton, neutron and electron. The proton and the electron reside in the nucleus of the atom while the electron orbit the nucleus. The number of proton plus the number of neutrons in the nucleus of an atom gives the atomic mass of that atom.

The salt in the sea water dehydrated the sailor because her body could not take in the amount to salt in the sea water