everyone takes standard entalphy of formation 5491 do not do that, please take what I shared = -250,2 please look the screen

please

Ex 1) Liquid octane burns witlelyeqation of liquid water (constant pressure and 25C ). a) Write and balance the combustion reaction b) Calculate the amount in grams of octane burned, the moles of water produced and the volume of oxygen consumed (measured at 0C and 1atm ) if the heat released by the reaction is 2.70104kJ. c) Draw the Lewis structure of methane and briefly describe carbon hybridization. \begin{tabular}{|l|l|} \hline C6H12(I) & 156,2 \\ \hline C6H14(I) & 198,8 \\ \hline C6H6(I) & 49,04 \\ \hline C8H18(I) & 250,2 \\ \hline C12H26(I) & 352,4 \\ \hline Ca2(OH)2(s) & 986,1 \\ \hline CaCO3(s) & 1207 \\ \hline CaO(s) & 635.1 \\ \hline \end{tabular}