A container filled with fluorine gas and neon gas and has a total pressure of 8atm. There are 50g of fluorine gas in the container, and the fluorine gas exerts a pressure of 5atm.Based on this, what is the mass of neon in the container?

Question

$\begin{array}{1 1} (a)\;15.9\;g \\(b)\;26.6\;g \\ (c)\;30.0\;g \\ (d)\;7.6\;g \end{array} $