Answers created by Samuel Xu JJ
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In addition to having identified more elements, the modern periodic table also gives the atomic masses more digits. Why do you think this the case?
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How do you solve #4x - 3= 4( x + 9)#?
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Question #37e92
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Why is water called the 'universal solvent?
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Why are covalent compounds not conductive?
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How does waste disposal lead to land pollution?
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An atom of a sodium has 11 protons, 11 electrons, 12 neutrons. What is its atomic number?