Gas chromatographic analysis:Retention time (min)retention time (min)pure cyclohexanepure toluene1:1 cyclohexane : tolueneFractional distillation without a Vigreux column% cyclohexane% toluenefraction 1afraction 1bfraction 1cFractional distillation with a Vigreux column% cyclohexane% toluenefraction 2afraction 2bfraction 2c

Consider the following intermediate chemical equations. ch4(g) + 2o2(g) → co2(g) + 2h2o(g) 2h2o(g) → 2h2o(1) which overall chemical equation is obtained by combining these intermediate equations? ch4(g)+2o2(g) → co2(g) + 2h2o(1) ch4(g) +202(g) → co2(g) + 2h2o(g) ch4(g) + 2o2(g) → co2(g) + 4h2o(g) + 2h2o(1) ch4(g) + 2o2(g) → co2(g) + 6h2o(g)