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Formula from Chapter 9: Additivity of partial pressure
\(P_{\mathrm{total}} = \sum (P_{\mathrm{partial}})\)
\(P_{\mathrm{\ce{N2}}}\)
\(= 4.7\ \mathrm{atm}\)
partial pressure of dinitrogen
\(P_{\mathrm{\ce{O2}}}\)
\(= 1.3\ \mathrm{atm}\)
partial pressure of dioxygen
\(P_{\mathrm{total}}\)
\(= P_{\mathrm{\ce{N2}}} + P_{\mathrm{\ce{O2}}}\)
\(\ \ \ =4.7\ \mathrm{atm} + 1.3\ \mathrm{atm}\)
\(\ \ \ =6.0\ \mathrm{atm}\)