2 years ago

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

Chemistry

1 answer:

natita [175]2 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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Gravity on Earth is 9.8 m/s2, and gravity on the Moon is 1.6 m/s2.

Ivanshal [37]

Answer:

Mass is the same but it weights 64 Newtons

Explanation:

First of Mass is the same in any sort of gravity. Now let's calculate weight

W = MG

where W = Weight

M = Mass

G = Gravity

W = (40kg)(1.6)

W = 64

Sorry for the spelling mistakes, hope this helps

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2 years ago

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drek231 [11]

Answer:

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Solution. Hence, 2 moles of nitrogen atoms weigh 28g.

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kupik [55]

Answer:

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Explanation:

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2 years ago

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photoshop1234 [79]

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2 years ago

Which is the empirical formula for a compound that contains 64.75g nitrogen and 185.25 oxygen

Svetach [21]

Answer:

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3 years ago