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Match the number of protons, neutrons, and atomic mass number for nitrogen-15: 15 N 7 > > 15 8 7 1. Number of protons 2. Number of neutrons 3. Atomic mass number

Match the number of protons, neutrons, and atomic mass number for nitrogen-15: 15 N 7 > > 15 8 7 1. Number of protons 2. Number of neutrons 3. Atomic mass number

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Match the number of protons, neutrons, and atomic mass number for nitrogen-15: < 15 8 7 15 7 N 1. Number of protons 2. Number of neutrons 3. Atomic mass number
Transcribed Image Text:Match the number of protons, neutrons, and atomic mass number for nitrogen-15: < 15 8 7 15 7 N 1. Number of protons 2. Number of neutrons 3. Atomic mass number
Suppose we look at two distant galaxies: Galaxy A is twice as far away as Galaxy B. In that case, which of the following statements is true? We can't say anything about these galaxies except for their distances We are seeing Galaxy A as it looked at an later time in the history of the universe than Galaxy B We are seeing Galaxy A as it looked at an earlier time in the history of the universe than Galaxy B
Transcribed Image Text:Suppose we look at two distant galaxies: Galaxy A is twice as far away as Galaxy B. In that case, which of the following statements is true? We can't say anything about these galaxies except for their distances We are seeing Galaxy A as it looked at an later time in the history of the universe than Galaxy B We are seeing Galaxy A as it looked at an earlier time in the history of the universe than Galaxy B
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