Answer to Question #257629 in Molecular Physics | Thermodynamics for Jay

Question #257629
A pressure gauge connected to a tank reads 380 kPa while the barometer reads 745 mm Hg. What is the absolute pressure in the tank?
1
Expert's answer
2021-10-31T18:11:43-0400

The pressure gauge is used to measure the difference between the tank pressure and surrounding atmosphere pressure: "p_G=p_T-p_A."

745 mmHg is 99325 Pa. Therefore, the absolute pressure in the tank is

"p_T=p_G+p_A=479325\\text{ Pa}."



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