Thanks for the A2AMost of the salt in humans is in the extracellular fluid, playing a role in fluid balance and neuronal signaling. On average, NaCl makes up about 0.3-0.4% of total body weight, each component contributing 0.15-0.2%. NaCl dissociates when it enters the body, becoming Na+ and Cl-, meaning you can't do a direct calculation to determine the mass, you need to use stoichiometry.I'm not sure what the average mass of adults are, but taking the first source I see on google (from) males are 70kg, while females are 61kg (changed to 60 for simplicity). That would mean 105-140g of each element in males and 90-120g of each in females. I won't show the calculations, but using the concept of a limiting reagent you get 173-230g salt in males, and 148-198g in females. Keep in mind that the salt is dissociated in water, meaning the elements are floating around individually. The number I calculated is the potential amount of salt you would get if you took all the Na+ and Cl- out of an adult and combined it.Hope that answers your question. If you want to see the calculations, leave a comment.