1.

a mercury barometer in a room at 25°c has a height of 750mm what is the atmospheric pressure in kpa

Answer»

The density of mercury at 25°C is found from Appendix Table to be 13.534 kg/m3
By the formula
Patm=ρgH0=13.534 x 9.806 x 0.750/1000
=99.54 kPa



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