A 100 mL flask contained H 2 at 200 torr and a 200 M flask contained He at 100 torr. The two flasks were then connected so that each gas filled their combined volume Assume, no change in temperature, total pressure is (JIPMER 2018)

Given, 2 2 200 , 100 H H P torr V mL 100 , 200 He He P torr V mL 2 2000 H PV n RT RT 20000 He PV n RT RT Total number of moles 2 20000 20000 4000 He nH n RT RT RT Total volume = 300 mL Total pressure ( ) n P RT V 40000 400 133.33 300 3 RT torr RT x x