Answer:
a
b
Explanation:
From the question we are told that
The pressure of the manometer when there is no gas flow is
The level of mercury is
The drop in the mercury level at the visible arm is
Generally when there is no gas flow the pressure of the manometer is equal to the gauge pressure which is mathematically represented as
Here is the density of mercury with value
and is the difference in the level of gas in arm one and two
So
Generally the height of the mercury at the arm connected to the pipe is mathematically represented as
=>
Generally from manometry principle we have that
Here is the pressure of the gas
converting to psig
