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The drawing represents the movement of particles in a substance. what changes of state can this substance undergo
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An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.
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Chemistry, 22.06.2019 09:00
Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?
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by exerting 20 pounds on a one square inch cylinder, the resulting force on a five square inch cylin...
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