Adsorption of $\mathrm{N_2}$ on $\mathrm{TiO_2}$ was carried out at 75 K. A plot of $\dfrac{z}{(1-z)\mathrm{V}}$ versus $z\,(z=p/p^{0})$ gives a straight line with an intercept, $4.0\times10^{-6}\,\mathrm{mm^{-3}}$ and slope, $1.0\times10^{-3}\,\mathrm{mm^{-3}}$. The volume (rounded off to the nearest integer) corresponding to the monolayer coverage is:
(a)$555 \mathrm{mm}^{3}$
(b)$690 \mathrm{mm}^{3}$
(c)$785 \mathrm{mm}^{3}$
(d)$996 \mathrm{mm}^{3}$
Answer
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