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What is the absolute pressure (psia) in a containeer if its vacuum gauge reads 8.5 psi...

What is the absolute pressure (psia) in a containeer if its vacuum gauge reads 8.5 psi and a barameter reads 29 inches?

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Answer #1

Absolute pressure , Pabs = Patm + Pgauge

Given Patm = barometer pressure = 29 inches       since 1 psi = 2.04 inches of Hg

                  = 29 / 2.04 psi

                  = 14.2 psi

       Pgauge = vacuum gauge pressure = 8.5 psi

Plug the values we get

Pabs = Patm + Pgauge

        = 14.2 + 8.5 psi

      = 22.7 psi

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