In a poster roll (diameter) 6 cm, length 72 cmA few drops of pentane (1/4 ml) given and with the air-pentan mixture It's inflamed. (a) Calculate the reaction enthalpy. (b) It has been shown experimentally that too much pentane does not produce a better explosion than the air-pentan mixture Calculate the maximum amount of pentane. Background: wonderful teaching experience. Note: Unknown sizes – molecules are self-extinguishing.