im not sure which one to answer, and i can hardly see the text.
Answer:
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Explanation:
Answer:
Self-reduction is a reaction in which no external reducing agent is required. It is called self-reducing because copper oxide itself reduced the copper sulfide to give copper and sulfur dioxide.
Answer:
a guy named Dmitri mendeleev devised the periodic table and it did not go very well for him
Explanation:
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