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In the short run, only a limited number of new firms may enter a perfectly competitive market.
Air
A mixture of gases that constitute the Earth's atmosphere, primarily composed of nitrogen, oxygen, argon, and carbon dioxide.
Unbalanced Reaction
A chemical equation where the number of atoms for each element is not the same on both sides of the equation.
Gunpowder
A mixture of saltpeter (potassium nitrate), sulfur, and charcoal (carbon) that explodes when ignited.
Potassium Nitrate
A chemical compound with the formula KNO3, used as a fertilizer, in food preservation, and in the manufacture of gunpowder.
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