Liquid heptane is stored in a 100,000-L storage vessel that is vented directly to air. The heptane is stored at \(25^{\circ} \mathrm{C}\) and \(1 \mathrm{~atm}\) pressure. The liquid is drained from the storage vessel and all that remains in the vessel is the air saturated with heptane vapor.

a. Is the vapor in the storage vessel flammable?

b. What is the TNT equivalent for the vapor remaining in the vessel?

c. If the vapor explodes, what is the overpressure \(50 \mathrm{~m}\) from the vessel?

d. What damage can be expected at \(50 \mathrm{~m}\) ?

Data for heptane \(\left(\mathrm{C}_{7} \mathrm{H}_{16}ight)\) :

Molecular weight: 100.21 Lower heat of combustion: \(-4464.9 \mathrm{~kJ} / \mathrm{mol}\)

LFL: 1.0 vol. \(\%\)

UFL: 7.0 vol. \(\%\)

Boiling point: \(98.4^{\circ} \mathrm{C}\)