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he gas constant (also known as the molar , universal , or ideal gas constant , denoted by the symbol R or R ) is a physical constant whic...

The Ideal Gas Equation The three historically important gas laws derived relationships between two physical properties of a gas, while keep...

An ideal gas is a theoretical gas composed of a set of randomly-moving, non-interacting point particles . The ideal gas concept is useful...

Avogadro's law (sometimes referred to as Avogadro's hypothesis or Avogadro's principle ) is a gas law named after Amedeo Avog...

Absolute zero is the theoretical temperature at which entropy reaches its minimum value. The laws of thermodynamics state that absolute ...

At constant pressure, the volume of a given mass of an ideal gas increases or decreases by the same factor as its temperature on the absolu...

Some of the earliest quantitative measurements were performed on gases. One early study was conducted by Robert Boyle in 1662. "At a f...

If light nuclei are forced together, they will fuse with a yield of energy because the mass of the combination will be less than the sum ...

If a massive nucleus like uranium-235 breaks apart (fissions), then there will be a net yield of energy because the sum of the masses...

In humans and other animals , the anatomical features of the respiratory system include airways, lungs , and the respiratory muscles . Mole...

The digestive system is made up of the digestive tract—a series of hollow organs joined in a long, twisting tube from the mouth to the anu...