The liquid level in the open arm of an openended manometer as well as the liquid level in the arm connected to a container of gas are measured in millimeters above a reference point. Assume barometric pressure to be 757 mmHg and the liquid to be mercury. Calculate the pressure of the gas in the container under the following sets of conditions. Gas Sample A The height of liquid mercury above the reference point on the open arm (exposed to the atmosphere) is 28 mm and the height of liquid mercury on the gas arm is 312 mm above the same reference point. Gas Sample B The height of liquid mercury above the reference point on the open arm is 198 mm and the height of liquid mercury on the gas arm is 142 mm above the same reference point