Q. 40 Temperature of nitrogen in a vessel of volume 
. A U-tube manometer
connected to the vessel shows a reading of 70 cm of mercury (level higher in
the end open to atmosphere). The universal gas constant is 8317 J/kmol-K,
atmospheric pressure is 1.01325 bar, acceleration due to gravity is 9.81 
and
density of mercury is 
. The mass of nitrogen (in kg) in the vessel
is_______.
Answer: (4.55)
Explanation:
