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If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?
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Write the empirical chemical formula of calcium with a mass percent of 38.8, phosphorus with a mass percent of 20.0, and oxygen with a mass percent of 41.3.
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When utilizing a transmission electron microscope, why is it necessary to stain the specimen with heavy metal salts?
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