Formula from Chapter 9: partial pressure from mole fraction

\(P_{\mathrm{A}} = X_{\mathrm{a}} \cdot P_{\mathrm{total}}\)     

\(P_{\mathrm{total}}\) \(= 1.0\ \mathrm{atm}\)


\(X_{\mathrm{\ce{N2}}}\) \(= 0.79\)


\(P_{\mathrm{\ce{N2}}}\) \(= X_{\mathrm{\ce{N2}}} \cdot P_{\mathrm{total}}\)

\(\ \ \ =0.79 \cdot 1.0\ \mathrm{atm}\)

\(\ \ \ =0.79\ \mathrm{atm}\)