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Aliun [14]
3 years ago
14

If a metal changes color over time from exposure to air, what has likely occurred?

Chemistry
1 answer:
natita [175]3 years ago
3 0

Answer:

Option A. a chemical change

Explanation:

A chemical change is a change in which new substance is formed and can not be easily reversed. A change of metal color when exposed to air for a long time is simply called rusting. This is a chemical change as new substance is formed. This can be seen when Zn roofing sheets changes color over time on exposure to air.

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3 years ago
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Answer is: 5,75·10⁻¹.
Kf = 2,3·10⁶ 1/s.
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Kr = ?
Kf - <span>forward rate constant.
K - </span><span>equilibrium constant.
Kr - </span><span>reverse rate constant.
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K = Kf/Kr.
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3 years ago
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