A $20-$oz bottle of Coca$-$cola contains ~$592$ mL of fluid. The Coke$$s sodium $($Na$+)$ and sugar content are $80$ mg and $64$ g$,$ respectively. The sodium was added in the form of Na$3$PO$4,$ the sugar is C$6$H$12$O$6($and does not dissociate$).$ Assume that these compounds are the only significant components in Coke. The phosphate $($PO$43-)$ concentration is measured to be $190$ mg$/$L$.$ Determine whether the chemical analysis is valid, based on electroneutrality considerations.