Question 7 In a container were 10 mol of pure oxygen at 3000 Kelvin. This gas was pressed by a very heavy piston, forcing the gas to assume 3000 kPa of pressure to mechanically balance the system. On the base of this container, there was a thin cylinder of graphite standing. The end of the graphite received a small spark, trigger for incomplete combustion of the graphite, which generates 111 kJ of heat for each mole of graphite burned. Oxygen was slowly replaced by carbon monoxide as the piston rose. In the end, all the oxygen was consumed. a) l.v'll'hat increase in the volume of gas inside the container? b} Neglecting the volume of graphite consumed by the reaction, how much heat did the system lose by thermal conduction to the external environment