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Answers: 2
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For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have
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State one important difference between a physical change and a chemical change?
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Equal numbers of moles of he(g), ar(g), and ne(g) are placed in a glass vessel at room temperature. if the vessel has a pinhole-sized leak, which of the following will be true regarding the relative values of the partial pressures of the gases remaining in the vessel after some of the gas mixture has effused?
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