26.1000 ml of a gas A at 600 torr and 500 ml of gas B at 800 torr are placed in a 2L flask. The final pressure in atmosphere is

27.The average distance traveled by the molecule between successive collisions is called

28.If volume of two moles of ideal gas at 540 K is 44.8 L, then its pressure will be

29.A vessel containing gas at a pressure of 60 cm of Hg was connected to arm A of open end manometer. The atmospheric pressure was recorded as 74 cm of Hg. If mercury in arm A stands at 84.5 cm height, the mercury in arm will stand at