You have likely found B. a meteorite. Hope this helps!
Dalton's Law of Partial Pressures, commonly applied to ideal gases, explains that the partial pressures of individual, non-reacting gases are equal to the total pressure exerted by the gas mixture. The given gas mixture composed of 90% argon and 10% carbon dioxide has the following partial pressures: 3.6 atm for argon and 0.4 atm for carbon dioxide (answer).
C. The difference<span>ce</span><span /><span> between the potential energy of the products and the potential energy of the reactants
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it is tecnically magnesium,