Calculate the surface area of the silica gel in $\frac{m^2}{g}$ by using the adsorption data for oxygen at $-183C.$ The density of the liquified oxygen at $-183C$ is $1\mathrm{.}14\frac{g}{c}{m}^3.$ Linearized BET isotherm for $0\mathrm{.}606g$ of silica gel shows an intercept of $0\mathrm{.}40{10}^{-3}c{c}^{-1}$ and a slope of $13\mathrm{.}2{10}^{-3}c{c}^{-1}.$