Question

when copper reacts with oxygen, does its mass increase?

Answer 1

Answer:

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When heated, oxygen reacts with copper to form copper oxide. If this reaction occurs in a sealed container, will the mass of the container and everything in it increase, decrease, or stay the same and why? The mass will stay the same because the number of each kind of atom stays the same.

Answer 2

Answer:

No it mass not increase hope helpful