What does the statement “Mass is conserved during a chemical reaction” mean?

1 answer:

3 0

This is the law of conservation of mass, which means that, for ex., if I burn my book, the mass of the smoke, cinders and ashes I'm left with will be the same as my original book.

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Marysya12 [62]

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Cu⁺² + 2e → Cu; E° = 0.34 V
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The second option is correct. (The difference in values is due to different values in literature, and it is negligible)

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