1. A gas cylinder contains 3000 lb of propane (C3H8). The cylinder accidentally falls over and ruptures, vaporizing the entire contents of the cylinder. The vapor cloud formed is ignited and an explosion occurs. Estimate the damage for common structure resulted from this explosion 150 ft away. Heat of combustion of propane is 2202 kJ/mole and the explosion efficiency is 4 %.

2. As per the design rule, control room should be built strong enough to withstand one ton blast of TNT at 150ft. a. What quantity of propane (C3H8) does this design limit correspond to? b. How far from this 1-ton blast must residential home be built in order to receive no more than minor damage?