1. Assume that the 195pt crystal in the electron microscope image at right has a density of 21.45g/cc, and that the planes of atoms seen edge-on are ~2.3A = 0.23nm apart. 1a) What do you estimate for the diameter of the particle, assuming that it is a sphere?
1. Assume that the 195pt crystal in the electron microscope image at right has a density of 21.45g/cc, and that the planes of atoms seen edge-on are ~2.3A = 0.23nm apart. 1a) What do you estimate for the diameter of the particle, assuming that it is a sphere?
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1. Assume that the 195PP crystal in the
electron microscope image at right has a
density of 21.45g/cc, and that the planes of
atoms seen edge-on are ~2.3A = 0.23nm
аpart.
1a) What do you estimate for the diameter of the
particle, assuming that it is a sphere?
1b) From that diameter, what do you estimate for
the mass of the particle in kilograms?
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16
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w21a.pdf
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1b) From that diameter, what do you estimate for
the mass of the particle in kilograms?
1c) What do you estimate for the number of Pt atoms in this particle, as a result?
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