Which of the following statements regarding ordinary chemical reactions and nuclear reactions is correct? A The identity of an atom never changes during a nuclear reaction B The identity of an atom may not change during an ordinary chemical reaction C There can never be a change in the total mass measured before and after a chemical reaction or a nuclear reaction D The energy change associated with a chemical reaction is always much greater than that of a nuclear reaction E The free energy of the universe always increases during nuclear reactions

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Q: The diagram below illustrates the radioactive decay of a sample of mercury-207. Use it to answer the…

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