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Murrr4er [49]
3 years ago
12

When she dropped a rock into a graduated cylinder of water, Veronica noticed it sank to the bottom. She decided to investigate w

hat it would do if she tossed it into a much larger amount of water. When she tossed it into a lake, the rock sank again. A) The density of a substance is the same regardless of the amount. B) The lake had become less dense because of heavy rains in the past month. C) The rock was already wet from being submerged in the graduated cylinder of water. D) An object's density changes based on the amount of substance in which it is submerged.
Chemistry
2 answers:
Romashka [77]3 years ago
8 0
A is correct. water is incompressible, so it will always have the same density, regardless of volume
Oksana_A [137]3 years ago
4 0

a)the density of a substance is the same regardless of the amount
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A proposed mechanism for the reaction of NO2 and CO is
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Answer:

a.

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b. See attached picture.

Explanation:

Hello,

a. In this case, given the reactions, we can identify each species as:

1. NO2(g): Reactant because it remains at the left side in the overall reaction.

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4. CO2(g): Product because it remains at the right side in the overall reaction.

5. NO(g): Product because it remains at the right side in the overall reaction.

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Regards.

8 0
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Answer:

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Hope this helps!
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