A $0\mathrm{.}02cm$ BCC iron foil is used to separate a high hydrogen gas from a low hydrogen gas at $420C.511,498,741H$ atoms $\frac{?}{c{m}^3}$ are in equilibrium on one side of the foil, and $11,730H$ atoms $\frac{?}{c{m}^3}$ are in equilibrium with the other side. Determine the flux of hydrogen through the foil in atoms $\frac{?}{c}\frac{m^2}{s}.$ You will need to find the properties of hydrogen diffusing through iron in the text book, Table $5-1.$

Report your answer to $3$ significant figures, for example $1\mathrm{.}23$ e $5$ or $3\mathrm{.}45$ e $8.$

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