A cube $17$ cmcm on each side contains $3\mathrm{.}1$ gg of helium at $20$C$$C$.1000$ JJ of heat are transferred to this gas. What is the final pressure if the process is at constant volume? What is the rate of transfer of oxygen to the blood through the $5\mathrm{.}0109$m$25\mathrm{.}0109$m$2$ surface area of one alveolus? Give your answer in molecules$/$s