The equation PV = nRT is called the ideal gas law. It states that pressure times volume equals the number of moles of gas molecules times temperature times the ideal gas constant. By convention, pressure is converted into atmospheres (atm), volume into liters (L) and temperature into degrees Kelvin (K).Know More
Chem Guide explains that by rearranging the equation, the units of the ideal gas constant R are L x atm / moles x K, and the value of R is 0.082057 L atm / (mol K). In other unit systems, especially SI, the units of R are Joules / (mol K), and its value is 8.314.
At standard temperature and pressure, or 1 atmosphere and 273 K, 1 mole of gas occupies 22.4 liters. The equation accurately predicts the behavior of actual gases across a range of pressures and temperatures. Under extreme conditions, however, actual gases deviate from ideal behavior. At low temperatures or high pressures, for example, gas molecules do not collide elastically but instead clump together to form liquid droplets.Learn more about States of Matter
The standard unit for resistance is called the ohm after the German physicist Georg Ohm. Its symbol is the capital Greek letter Omega in the International System of Units and is the letter “R” in the British system of measurement.Full Answer >
Freezing point depression represents the variation in the freezing temperature of a pure solvent from that of the solvent in solution. In the equation ΔT=Kf m i, where i is the van’t Hoff factor, Kf represents the molal freezing point depression constant, also called the cryoscopic constant.Full Answer >
PV Holding Corporation is the parent company of Avis Budget Group, the renowned vehicle rental company. Its global headquarters is located at 6 Sylvan Way, Parsippany, N.J. The group also operates Zipcar, a car sharing network.Full Answer >
The most important use of the ideal gas law in daily life is in estimating the amount of ventilation a building needs for human use; another use is in estimating cabin pressurization in airplanes. In any closed environment with many people inside, the amount of air that gets through the walls may be insufficient. The amount of oxygen in a given volume is determined by this law.Full Answer >