Butane (c4 h10(g), mc031-1.jpghf = –125.6 kj/mol) reacts with oxygen to produce carbon dioxide (co2 , mc031-2.jpghf = –393.5 kj/mol ) and water (h2 o, mc031-3.jpghf = –241.82 kj/mol) according to the equation below. mc031-4.jpg what is the enthalpy of combustion (per mole) of c4h10 (g)? use mc031-5.jpg. –2,657.5 kj/mol –5315.0 kj/mol –509.7 kj/mol –254.8 kj/mol

The balanced chemical equation for the combustion of butane is:

Δ = ΣΔ-ΣΔ

                         = =[-3148kJ/mol+(-2418.2kJ/mol)]-[(-251.2kJ/mol)+0]

                      = -5315 kJ/mol

Calculating the enthalpy of combustion per mole of butane:

Therefore the heat of combustion per one mole butane is -2657.5 kJ/mol

Correct -2657.5 kJ/mol

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.