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An enthalpy–entropy chart, also known as the H–S chart or Mollier diagram, plots the total heat against entropy, [1] describing the enthalpy of a thermodynamic system. [2] A typical chart covers a pressure range of 0.01–1000 bar , and temperatures up to 800 degrees Celsius . [ 3 ]
A closely related property of a substance is the heat capacity per mole of atoms, or atom-molar heat capacity, in which the heat capacity of the sample is divided by the number of moles of atoms instead of moles of molecules. So, for example, the atom-molar heat capacity of water is 1/3 of its molar heat capacity, namely 25.3 J⋅K −1 ⋅mol ...
With pOH obtained from the pOH formula given above, the pH of the base can then be calculated from =, where pK w = 14.00. A weak base persists in chemical equilibrium in much the same way as a weak acid does, with a base dissociation constant (K b) indicating the strength of the base. For example, when ammonia is put in water, the following ...
All values refer to 25 °C and to the thermodynamically stable standard state at that temperature unless noted. Values from CRC refer to "100 kPa (1 bar or 0.987 standard atmospheres)".
kJ/mol 1 H hydrogen (H 2) ; use (H 2) 0.1 : CRC (H 2) 0.12 : LNG (H 2) 0.117 : WEL (per mol H atoms) 0.0585 2 He helium; use: 0.0138 LNG: 0.0138 WEL: 0.02 3 Li lithium; use: 3.00 CRC: 3.00 LNG: 3.00 WEL: 3.0
This Wikipedia page provides a comprehensive list of boiling and freezing points for various solvents.
The Detroit Lions have a seemingly endless bucket of trick plays to pick from. Earlier this season, they ran a hook-and-ladder play to Penei Sewell, their fantastic 335-pound left tackle.
[23] 0.23 ppm of the earth's mass is water and 97.39% of the global water volume of 1.38 × 10 9 km 3 is found in the oceans. [ 84 ] Water is far more prevalent in the outer Solar System, beyond a point called the frost line , where the Sun's radiation is too weak to vaporize solid and liquid water (as well as other elements and chemical ...