How does pressure affect gas density? Chemistry Gases Gas Pressure 1 Answer anor277 Jun 12, 2018 Well....#PV=nRT# Explanation: And so #P/(RT)=n/V=("mass"/"molar mass")/(V)# And so...#rho=P/(RT)xx"molar mass"# Thus #rho_"[density](https://socratic.org/chemistry/measurement-in-chemistry/density)"# is directly proportional to pressure.. Answer link Related questions How can gas pressure be changed? How can you increase gas pressure in a container? How is gas pressure created? Why does gas pressure increase when temperature increases? Why is gas pressure zero at absolute zero? Why does gas pressure increase with temperature? Why is there no gas pressure in a vacuum? What is the total gas pressure in a sealed flask that contains oxygen at a partial pressure of... If the absolute pressure of a gas is 550.280 kPa, what is its gage pressure? If a gas sample occupies 4.2 L at a pressure of 101 kPa. What volume will it occupy if the... See all questions in Gas Pressure Impact of this question 8693 views around the world You can reuse this answer Creative Commons License