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Graphite is made up of layers of graphene. Each layer of graphene is about 200 picometers, or 200 * 10^-12 meters, thick.
How many layers of graphene are there in a 1.6-millimeter-thick piece of graphite? Express your answer in scientific notation.
+36915 1.6 mm = .0016 m
.0016 m / (200x 10-12 m/layer) = 8 000 000 layers = 8 x 106 layers
