If the atmospheric pressure is 0.960 atm, what is the pressure of the enclosed gas in each of the three cases depicted in the drawing?

1. What is the pressure of the enclosed gas in (i) case if the liquid is mercury?
***There is an open end. The enclosed gas is above the mercury. h = 52 cm.

2. What is the pressure of the enclosed gas in (ii) case if the liquid is mercury?
***There is an open end. The enclosed gas is below the mercury. h = 67 mm.

3. What is the pressure of the enclosed gas in (iii) case if the liquid is mercury?
***There is a closed end. The enclosed gas is below the mercury. h = 10.3 cm.

Thank you in advance!!! : D