A certain elastic balloon will support an internal pressure

Last updated: 6/9/2023

A certain elastic balloon will support an internal pressure equal to P 100 kPa until the balloon becomes spherical at a diameter of D 1m beyond which P P C x x x D D because of the offsetting effects of balloon curvature and elasticity This balloon contains helium gas at 250 K 100 kPa with a 0 4m volume The balloon is heated until the volume reaches 2 m During the process the maximum pressure inside the balloon is 200 kPa a What is the temperature inside the balloon when pressure is maximum b What are the final pressure and temperature inside the balloon c Determine the work and heat transfer for the overall process R 2 0770kJ kgk c 3 1156kJ kgk 173125K 196 15kPa 2452K 289 77kJ 818kJ