Answer:
The combined mass of all the protons and electrons is 24.305.
Explanation:
From the information given about the atom, we can see that the relative atom mass of the element is 24.305.
The relative atomic mass of an atom is the combined mass of all its isotope in proportion of their geonormal abundances. On the periodic table, this mass deals with the amount of protons and neutrons present in a given atom.
A.) The reaction is Exothermic
The nervous system sends signals to the muscles to shiver when our body temperature begins to drop to a lower than normal temperature. the slight movement of the muscles will work to bring temperature back to homeostasis