Haber process, a Rare card

The card carries these facts from its Wikipedia article.

• It converts atmospheric nitrogen to ammonia by a reaction with hydrogen using finely divided iron metal as a catalyst: N 2 + 3 H 2 ↽ − − ⇀ 2 NH 3 Δ H 298 K ∘ = − 92.28 kJ per mole of N 2 This reaction is exothermic but disfavored in terms of entropy because four equivalents of reactant gases are converted into two equivalents of product gas.
• However, due to the extremely high kinetic barriers to bond cleavage, high pressures and temperatures are needed to drive the reaction forward.
• The Haber Process was first created by the German Chemist Fritz Haber, then developed after a few years by Carl Bosch.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Haber process article was read about 320,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 81 and blocks with 88: each hit it takes is cut by 35 %.

Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.

The cards just above and just below Haber process in the power ranking, all domains together.