The diffusion constant for a particular ion crossing an artificial membrane is $2\mathrm{.}50$ x$10-16$ m$2/$s$.$ The membrane has an area of $5\mathrm{.}70$ x$10-15$ m$2$ and a thickness of $7\mathrm{.}30$ nm$.$ On one side of the membrane there is pure water, on the other side there are ions. If $6\mathrm{.}00$ x $104$ ions cross the membrane each second, what is the molarity of the ion solution? Answer in mol$/$m$3$ with no decimal places, but do not include units in your answer.$$