1) Mercury (Hg) can be used in a barometer to measure air
pressure, based on how tall a column of mercury can be supported by
the pressure of the atmosphere or another gas sample. The
barometric reading taken at Skyline College on a specific day was
743.8 mm Hg. If the interior circumference of the tube holding the
mercury is 9.82 mm, what is the mass of mercury in the tube (above
the pool of mercury)? The column may be...