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Topic: Universal gas equation

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Equation of state

Ideal gas law

Gas laws

Universal gas constant

Gas constant

Boyles law

Van der Waals equation

Barotrauma

Intercooler

Pressure

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	Ideal gas law - Wikipedia, the free encyclopedia
		The ideal gas law is the equation of state of an ideal gas.
		The state of an amount of gas is determined by its pressure, volume, and temperature.
		The ideal gas law can also be derived from first principles using the kinetic theory of gases, if the molecules are assumed to be hard spheres.
	en.wikipedia.org /wiki/Universal_gas_law (349 words)

	Gas - MSN Encarta
		The constant R on the right-hand side of the equation is a universal constant and has a value of 8.31447 J/mol·K. This single equation can predict the behavior of a gas even if multiple conditions are changed simultaneously.
		The gas laws were discovered empirically—that is, scientists performed experiments, observed the behavior of gases, and came up with equations that fit that behavior.
		A gas particle has kinetic energy in proportion to its speed: the faster it is moving, the greater its kinetic energy.
	encarta.msn.com /encyclopedia_761576933_3/Gas.html (784 words)

	Gas laws
		They are collectively generalized by the universal gas equation.
		Boyle's Law, named afer Robert Boyle, states that the volume occupied by a gas at constant temperature is inversely proportional to the pressure applied.
		which states that pressure P multiplied by the volume V is equal to the number of moles of the gas n, multiplied by the temperature T and a constant R.
	www.ebroadcast.com.au /lookup/encyclopedia/ga/Gas_laws.html (245 words)

	What is the Ideal Gas Law?
		An ideal gas is defined as one in which all collisions between atoms or molecules are perfectly eleastic and in which there are no intermolecular attractive forces.
		The ideal gas law states that at a temperature of 273 K and a pressure of 1 atmosphere, 1 mole of any gas occupies a volume of 22.4 liters.
		The universal gas constant has a value which depends only upon the units in which the pressure and volume are measured.
	www.biosint.com /faqs/ideal-gas-law.htm (283 words)

	Valve Sizing Calculations - Fisher Regulators
		Using the principle of conservation of energy, Daniel Bernoulli found that as a liquid flows through an orifice, the square of the fluid velocity is directly proportional to the pressure differential across the orifice and inversely proportional to the specific gravity of the fluid.
		A blending equation, called the Universal Gas Sizing Equation, combines equations (A) and (B) by means of a sinusoidal function, and is based on the "perfect gas" laws.
		It is apparent that accurate valve sizing for gases that requires use of the dual coefficient is not sufficient to describe both the capacity and the recovery characteristics of the valve.
	www.fisherregulators.com /technical/sizingcalculations (3114 words)

	Ideal Gas Law (Site not responding. Last check: 2007-10-31)
		An ideal gas is a gas that conforms, in physical behaviour, to a particular, idealized relation between pressure, volume, and temperature called the ideal gas law.
		Although no gas has these properties, the behaviour of real gases is described quite closely by the ideal gas law at sufficiently high temperatures and low pressures, when relatively large distances between molecules and their high speeds overcome any interaction.
		The ideal gas law may be written in a form applicable to any gas, according to Avogadro's law (q.v.), if the constant specifying the quantity of gas is expressed in terms of the number of molecules of gas.
	abyss.uoregon.edu /~js/glossary/ideal_gas_law.html (287 words)

	Equation of State (Site not responding. Last check: 2007-10-31)
		If we divide both sides of the general equation by the mass of the gas, the volume becomes the specific volume, which is the inverse of the gas density.
		We also define a new gas constant (R), which is equal to the universal gas constant divided by the mass per mole of the gas.
		The value of the new constant depends on the type of gas as opposed to the universal gas constant, which is the same for all gases.
	colaco.freeshell.org /nasa/GasLab/eqstat.html (595 words)

	The Spiritual Core of Master Mantak Chia's Teaching
		Earth force is combined with the universal primordial force so that it is a source of the major force that is closest to the quality of human force.
		Basic Substructure of the Universe: No particle ever stays completely at rest but is constantly in motion due to a ground state field of energy constantly interacting with all subatomic matter.
		It means that the basic substructure of the universe is a sea of quantum fields that cannot be eliminated by any known laws of physics.
	www.universal-tao.com /9formulas.html (9202 words)

	Highbeam Encyclopedia - Search Results for equation (Site not responding. Last check: 2007-10-31)
		equation EQUATION [equation] in mathematics, a statement, usually written in symbols, that states the equality of two quantities or algebraic expressions, e.g., x +3=5.
		Basic Notation Used in Equations The chemical equation 2H 2 +O 2 â’2H 2 O represents the reaction of hydrogen and oxygen to form water.
		A predictive equation for determination of resting energy expenditure in mechanically ventilated patients.
	www.encyclopedia.com /SearchResults.aspx?Q=equation (698 words)

	The Alder-Wainwright gas-solid phase transition.
		In equation (12), the first two terms may be recognized as, effectively, the “ideal gas” terms and the last the hard-core term.
		The first of equations (13) is recognized as the Sakur-Tetrode equation, to which the SPT equation for the entropy reduces in circumstances of large volumes and dilute densities. Although the so-called ideal gas contribution to the entropy, S
		(13), has the identical functional form as the Sakur-Tetrode equation for an ideal gas, the volume which appears in that function is related to the temperature and pressure by the SPT equation of state, (8), not by the ideal gas law, the first of equations (9).
	www.gasresources.net /Alder-WainwrightTransition.htm (3912 words)

	411A: M2, U9, P3 : Ideal Gas Equation
		Since gas pressure is the result from collisions between gas particles and surfaces, anything that increases the number of collisions per unit of time will increase pressure.
		The value of the Universal Gas Constant depends on the units used for the remainder of the terms in the ideal gas equation.
		A simple restatement of this equation, assuming that n, the number of moles of the gas remain constant, makes it possible to calculate P, V or T even when external conditions are changing.
	www.shodor.org /os411/courses/411a/module02/unit09/page03.html (321 words)

	Anaesthesia UK : Physics of gases
		The terms gas and vapour are synonymous but vapour relates to the gaseous phase at a temperature and pressure close to that at which the gas would condense into a liquid.
		Applying the three gas laws, for a change to occur in the state of a gas, heat energy is either added or taken away from the gas.
		The volume, temperature and gas constant remain the same and pressure is therefore proportional to n, the number of moles.
	www.frca.co.uk /article.aspx?articleid=100403 (2201 words)

	Ideal Gas Properties
		Thus, a real gas is said to "behave as" an ideal gas, when the pressure is low enough that the higher order pressure-dependent terms in the equations of state can be neglected.
		Since an ideal gas is a special case of a pure substance, the state is specified by giving the values of two properties.
		Of course, the P-v-T surface for an ideal gas is much simpler that that for the general case of a pure substance.
	gaia.ecs.csus.edu /~reardonf/thermhtm/idgas.htm (694 words)

	Geology 150 - Climate Changes (Site not responding. Last check: 2007-10-31)
		At constant pressure and temperature, the volume (V) enclosed by a gas is proportional to the number of molecules (n) of that gas.
		In this equation, R* is the universal gas constant.
		Dalton's law of partial pressure states that the partial pressure exerted by a gas in a mixture is the pressure the gas exerts if it alone occupies the same volume.
	earth.usc.edu /geol150/weather/gaslaws.html (511 words)

	BookRags: Ideal Gas Law Summary
		An ideal gas is one in which all collisions between molecules or atoms are perfectly elastic and in which there are no intermolecular attractive or repulsive forces.
		Although no real gas is actually ideal and so can only approach the behavior implied by the ideal gas equation, they do act as if they were ideal gases at and below atmospheric pressure and so the concept is very useful in reality.
		The gas constant arises from a combination of the proportionality constants in the three empirical gas laws and has a value that depends only upon the units in which the pressure and volume are measured.
	www.bookrags.com /research/ideal-gas-law-wop (414 words)

	UNPh20
		For a given mass of gas at constant temperature, the volume is inversely proportional to the pressure, PV = constant.
		The pressure law states for a gas with constant volume the pressure is proportional to the Kelvin temperature of the gas.
		The universal gas equation combines the three gas laws as pV = nRT, n = amount of gas and R is the gas constant (universal molar gas constant) = 8.314 JK mol
	www.uq.edu.au /_School_Science_Lessons/UNPh20.html (3238 words)

	Environmental Protection Agency > Basic Concepts in Environmental Sciences > Module 2 > Ideal Gas Law
		The ideal gas law is one of the fundamental principles used in calculations involving gas flow in air pollution-related work.
		This law is used to calculate actual gas flow rates based on the quantity of gas present at standard pressures and temperatures.
		The ideal gas law is accurate as long as the pressures are relatively similar to normal ambient atmospheric pressures.
	www.epa.gov /eogapti1/module2/idealgas/idealgas.htm (711 words)

	Untitled Document
		Gas is one of the three physical states of matter and is unlike liquids and solids in that a gas will tend to expand to occupy all the space available to it.
		Gas is a substance that expands easily to fill any small empty container.
		Volume of a gas increases with increase f temperature at rate of 1/273 of volume at 0 C with each l deg.
	maps.unomaha.edu /Peake/3510/pressure.html (859 words)

	Ideal Gas Law
		In perfect or ideal gas the change in density is directly related to the change of temperature and pressure as expressed by the Ideal Gas Law.
		The Individual Gas Constant - R - depends on the particular gas and is related to the molecular weight of the gas.
		Gas Mixture Properties Special care must be taken for gas mixtures when using the ideal gas law, calculating the mass, the individual gas constant or the density
	www.engineeringtoolbox.com /ideal-gas-law-d_157.html (562 words)

	Real Gases (Site not responding. Last check: 2007-10-31)
		The ideal gas law states that a gas sample will be composed of molecules which are totally independent of one another and therefore will behave "ideally".
		If a gas behaves exactly as the ideal gas laws would predict it to behave in terms of volume, pressure, moles, and temperature, then the gas is said to be an ideal gas.
		The volume that the gas should be occupying under the stated conditions under ideal conditions is not the same as the volume of the gas as measured in the laboratory.
	members.aol.com /profchm/realgas.html (1029 words)

	Ideal Gases
		At a given temperature and volume, the total pressure of a gas sample is determined by the total number of moles of gas present, whether this represents a single substance, or a mixture, as long as the mixture may be approximated as an ideal gas.
		For a gas that is approximately ideal, the number of moles of the gas sample is related to its pressure (p), volume (V) and temperature (T) only, regardless of its chemical identity.
		The volume of gas collected is measured by adjustment of the the beaker so that the water level in the beaker is the same as in the pan.
	itl.chem.ufl.edu /2045/lectures/lec_bc.html (1434 words)

	Equations in Fluid Mechanics
		The Ideal Gas Law - For a perfect or ideal gas the change in density is directly related to the change in temperature and pressure as expressed in the Ideal Gas Law.
		Properties of Gas Mixtures - Special care must be taken for gas mixtures when using the ideal gas law, calculating the mass, the individual gas constant or the density.
		The Individual and Universal Gas Constant - The Individual and Universal Gas Constant is common in fluid mechanics and thermodynamics.
	www.engineeringtoolbox.com /fluid-mechanics-equations-d_204.html (576 words)

	[No title] (Site not responding. Last check: 2007-10-31)
		In this equation, P is pressure, V is volume, n is the number of moles of gas, R is the constant of proportionality, and T is the temperature.
		R is called the universal gas constant, and is equal to 0.082 L-atm/mol-K, or 8.315 J/mol-K. Remember that this equation is only valid when the temperature is expressed in degrees Kelvin.
		If the pressure of the gas you collected was 755 Torr and the temperature were 25C, how much of that pressure was actually due to CO Sodium metal, when added to water, generates hydrogen gas and sodium hydroxide (NaOH).
	patsy.hunter.cuny.edu /CORE/gassummary.html (1611 words)

	Cave Diver's Forum Glossary of Terms by William Huth
		Bottom Gas: A gas mixture used for breathing during the main part of the dive that is being spent at the maximum depth.
		Gas Reversal Point: The point during ascent where the pressure (depth) is reached at which more gas is leaving tissue compartments than is arriving.
		Regulator: Device for transferring breathing gas from a tank to the diver includes a first stage high pressure attachment at the tank (to the tank valve) and a second stage low pressure delivery system with a mouthpiece for the diver to breathe from.
	www.cavediver.net /archives/glossary/lex_htm.html (11264 words)

	Boyle's law (Site not responding. Last check: 2007-10-31)
		Boyle's law (also known as the Boyle Mariotte law) is one of the gas laws, and relates the volume and pressure of an ideal gas held at a constant temperature.
		To maintain the constant during an increase in pressure of a gas, at fixed temperature, requires that the volume decrease.
		The three gas laws can be generalized by the universal gas equation.
	www.centipedia.com /articles/Boyle's_law (221 words)

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