Answer:
atomic number: how many protons
atomic mass: how many protons and neutrons
99.6 mg= .0996 g
.0996g x (1mol/125.05g) x (1 mol SO3/1 mol Na2SO2) x (6.02 x 10^22/1mol SO3) = 4.79 x 10^19 SO32- ions
The principal positively charged ion that has a significant role in maintaining fluid and electrolyte balance is p<span>otassium.
</span><span>Potassium (K) is the third most abundant mineral in the body.
It is needed for the function of brain, heart, kidneys and muscular tissues.
</span><span>Potassium is important for keeping the body hydrated and with sodium support cellular function (sodium-potassium pump).</span>