In a manometer the mercury level at the open end of the tube is 215 mm higher than at the closed end of the tube.

In a manometer the mercury level at the open end of the tube is 215 mm higher than at the closed end of the tube. If the atmospheric pressure is 1 atm, what is the pressure of the gas sample in units of torr?A)1.28 torrB)545 torrC)975 torrD)215 torr