Gibbs free energy, an Uncommon card

The card carries these facts from its Wikipedia article.

• It also provides a necessary condition for processes such as chemical reactions that may occur under these conditions.
• The Gibbs free energy is expressed as G = U + p V − T S = H − T S where: U is the internal energy of the system H is the enthalpy of the system S is the entropy of the system T is the temperature of the system V is the volume of the system p is the pressure of the system.
• The Gibbs free energy change is the maximum amount of non-volume expansion work that can be extracted from a closed system at fixed temperature and pressure.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Gibbs free energy article was read about 180,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 71 and blocks with 58: each hit it takes is cut by 23 %.

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The cards just above and just below Gibbs free energy in the power ranking, all domains together.