Find total pressure after 1.82×104 s .At 700Kacetaldehyde decomposes

Find total pressure after 1.82×104 s .At 700Kacetaldehyde decomposes in the gas phase to methane and carbon monoxide. The reaction is:CH3CHO(g)?CH4(g) CO(g)A sample ofCH3CHOis heated to 700Kand the pressure is measured as 0.15atmbefore any reaction takes place. The kinetics of the reaction are then followed by measurements of total pressure and these data are obtained:t(s)0100030007000PTotal (atm)0.150.160.180.20Rate=-deltaPCH3CHO/delta t=4.5×10^-4atm^-1 s^-1PCH3CHO^2Find total pressure after 1.82×104 s .