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2. Gas constant - Wikipedia

   en.wikipedia.org/wiki/Gas_constant

   The gas constant occurs in the ideal gas law: = = where P is the absolute pressure, V is the volume of gas, n is the amount of substance, m is the mass, and T is the thermodynamic temperature. R specific is the mass-specific gas constant. The gas constant is expressed in the same unit as molar heat.

3. Boyle's law - Wikipedia

   en.wikipedia.org/wiki/Boyle's_law

   For a fixed mass of an ideal gas kept at a fixed temperature, pressure and volume are inversely proportional. [2] Boyle's law is a gas law, stating that the pressure and volume of a gas have an inverse relationship. If volume increases, then pressure decreases and vice versa, when the temperature is held constant.

4. Ideal gas law - Wikipedia

   en.wikipedia.org/wiki/Ideal_gas_law

   Isotherms of an ideal gas for different temperatures. The curved lines are rectangular hyperbolae of the form y = a/x. They represent the relationship between pressure (on the vertical axis) and volume (on the horizontal axis) for an ideal gas at different temperatures: lines that are farther away from the origin (that is, lines that are nearer to the top right-hand corner of the diagram ...

5. Pressure - Wikipedia

   en.wikipedia.org/wiki/Pressure

   According to the ideal gas law, pressure varies linearly with temperature and quantity, and inversely with volume: =, where: p is the absolute pressure of the gas, n is the amount of substance, T is the absolute temperature, V is the volume, R is the ideal gas constant.

6. Gas laws - Wikipedia

   en.wikipedia.org/wiki/Gas_laws

   The laws describing the behaviour of gases under fixed pressure, volume, amount of gas, and absolute temperature conditions are called gas laws.The basic gas laws were discovered by the end of the 18th century when scientists found out that relationships between pressure, volume and temperature of a sample of gas could be obtained which would hold to approximation for all gases.

7. Ideal gas - Wikipedia

   en.wikipedia.org/wiki/Ideal_gas

   The ideal gas law is the equation of state for an ideal gas, given by: = where P is the pressure; V is the volume; n is the amount of substance of the gas (in moles) T is the absolute temperature; R is the gas constant, which must be

8. Pressure measurement - Wikipedia

   en.wikipedia.org/wiki/Pressure_measurement

   The difference in liquid levels represents the applied pressure. The pressure exerted by a column of fluid of height h and density ρ is given by the hydrostatic pressure equation, P = hgρ. Therefore, the pressure difference between the applied pressure P a and the reference pressure P 0 in a U-tube manometer can be found by solving P a − P ...

9. Standard temperature and pressure - Wikipedia

   en.wikipedia.org/wiki/Standard_temperature_and...

   Technical literature can be confusing because many authors fail to explain whether they are using the ideal gas constant R, or the specific gas constant R s. The relationship between the two constants is R s = R / m, where m is the molecular mass of the gas. The US Standard Atmosphere (USSA) uses 8.31432 m 3 ·Pa/(mol·K) as the value of R.