chemistry

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one edge of a cube is measured and found to be 2.162 cm. An atom of copper is 0.2560 nm in diameter. how many atoms of copper are contained in the cube.

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    I would do this. I don't think it is an exact way but...
    0.2560 nm = 2.56E-8 cm diameter so how many can be placed on an edge length. That will be 2.56E-8 cm x # atoms = 2.162 cm and solve for # atoms. Then cube that. I think that will over count because the end atom (and there are two ends) will be counted twice and the corner atoms will be counted three times.

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