In an adsorption experiment, a graph between $\log \left(\mathrm{x}/\mathrm{m}\right)$ vs $\log \mathrm{P}$ was fotund to be linear with a slope of ${45}^o$. The intercept on the $\log \left(\mathrm{x}/\mathrm{m}\right)$ axis was found to be $0.3$. The amount of the gas adsorbed per gram of charcoal under a pressure of $1 \mathrm{atm}$ is