Question

A modern digital barometer says that atmospheric pressure is 101.293 kPa and the height of mercury in the barometer is 762.79 mm as shown. What is the absolute pressure of the gas in the bulb of this barometer (in Pa)? [The density of mercury at this temperature is 13534 kg m−3 . In this problem use g = 9.807 m s−2 .]

Answer 1

$p=4.2~atm.$