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Which substances have the lowest melting points: ionic covalent, or metallic
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An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have
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Chemistry, 22.06.2019 19:30
How might this scientific phenomena be explained? a paper clip floats on water.
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Which of the following is a characteristic of a scientific theory? A. it explains how nature works....
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