The density of sea water is $1\mathrm{.}024\frac{g}{c{m}^3}($and its typical inorganic chemicals composition is $19\frac{g}{L}Cl-,$

$10\mathrm{.}5\frac{g}{L}N{a}^{+},2\mathrm{.}6\frac{g}{L}S{O}_4^{-2},1\mathrm{.}25\frac{g}{L}M{g}^{+2},400\frac{mg}{L}C{a}^{+2},380\frac{mg}{L}{K}^{+},$ and $140\frac{mg}{L}HC{O}_3^{-1}.$

a$)$ What are these concentrations in $\frac{\text{m}\text{m}\text{o}\text{l}}{L},\frac{\text{m}\text{e}\text{q}}{L}$ and $ppm?$

ppm concentration only$***$