Dinitrogen pentoxide decomposes in the gas phase to form nitrogen dioxide and oxygen gas. The reaction is first order in dinitrogen pentoxide and has…

Dinitrogen pentoxide decomposes in the gas phase to form nitrogen dioxide and oxygen gas. The reaction is first order in dinitrogen pentoxide and has a half-life of 2.81 at 25 degrees C. If a 1.7 reaction vessel initially contains 740 of at 25 , what partial pressure of will be present in the vessel after 210 minutes?