10. Consider the first-order reaction A B in which A molecules (unshaded spheres) are converted to B molecules (shaded spheres). Given the following pictures at t= 0 seconds and t= 100 seconds, which picture represents the number of A and B molecules remaining at 200 seconds? %3D t = Oseconds t = 100 seconds %3D (a) (b) (c) (d) Rev2020

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