Sand is composed of SiO2. Find the order of magnitude of the number of silicon (Si) atoms

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Sand is composed of SiO2. Find the order of magnitude of the number of silicon (Si) atoms in a grain of sand. Approximate the sand grain as a sphere of diameter 0.5 mm and an SiO2 molecule as a sphere of diameter 0.5 nm.
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Physics

ISBN: 978-0077339685

2nd edition

Authors: Alan Giambattista, Betty Richardson, Robert Richardson

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