Gasses (373-395) notes.docx - A gas fills every container is easily compressed and can easily mix with other gasses Gas exerts pressure on its

Gasses (373-395) notes.docx - A gas fills every container...

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A gas fills every container, is easily compressed, and can easily mix with other gasses Gas exerts pressure on it’s surroundings A barometer is a device that measures atmospheric pressure. It works by filling a glass tube with liquid mercury and inverting it in a dish of mercury The unit mm Hg is often called the torr and is used to measure atmospheric pressure Another unit for atmospheric pressure is standard atmosphere or atm 1 atm = 760 mm HG = 760 torr The SI unit for pressure is pascal (Pa) 1 atm = 101,325 Pa 1 atm = 14.69 psi Pressure times Volume equals a constent P x V = k This is Boyle’s law K is a constant for the gas’s temperature P is pressure and V is volume Pressure and volume in a gas have a relationship When one increases the other decreases Another form of writing Boyle’s law is: (This is used when comparing two conditions of gas with no change in temperature or amount of gas) V 2 = V 1 x P 1 P 2 -273 o C is defined as
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