Explain why copper is formed at the cathode during the electrolysis of its 2 salts. *
Your answer
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Nonpoint source pollution is difficult to control because it

Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together

The identities of substances are the same before and after which type of change