Chemistry Independent Study: Gas Laws Gas Laws Since the days of Aristotle, all substances have been classified into one of three physical states. A substance having a fixed volume and shape is a solid. A substance, which has a fixed volume but not a fixed shape, is a liquid; liquids assume the shape of their container but do not necessarily fill it. A substance having neither a fixed shape nor a fixed volume is a …showed first 75 words of 2455 total…

…showed last 75 words of 2455 total…when rounded to four significant figures. This is usually enough. Remember the value. You'll need it for problem solving. Notice the weird unit on R: say out loud "liter atmospheres per mole Kelvin." This is not the only value of R that can exist. It depends on which units you select. Those of you that take more chemistry than high school level will meet up with 8.3145 Joules per mole Kelvin, but that's for another time.