Calculate the reaction for the combustion of benzene, c6h6(l), from the data: 2 h2(g) + o2 (g) --> 2h2o(l) delta h= -572 kj c(s) + o2(g) --> co2(g) delta h= -394 kj 6c(s) + 3 h2(g) --> c6h6(l) delta h= +49 kj