# Oxygen gas inside a 1.5 L gas tank has a pressure of 0.95 atm. Provided that the temperature remains constant, how much pressure is needed to reduce its volume by 1/2?

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by Qball

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by Qball

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P₂ =

P₁ = 0.95 atm

V₁ = 1.5 L

V₂ = ¹/₂ (1.5 L) or 0.75

P₂ = ?

P₂ =

P₂ = 1.425 (atm)(L) / 0.75 L

P₂ = 1.9 atm