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Aneli [31]
3 years ago
6

Which best identifies why the rusting of an iron nail in the presence of water and oxygen is an oxidation-reduction reaction?

Chemistry
1 answer:
SpyIntel [72]3 years ago
6 0
<span>The right answer here is that the best explanation for why the rusting of an iron nail in the presence of water and oxygen is an oxidation-reduction reaction is answer B) electrons are transferred. This is the only answer that actually explains the chemical reasoning behind the reaction.</span>
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_______ is the process in which light energy is transformed into food energy. A.life B.photosynthesis C.abiotic D.biotic
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Answer:

B) Photosynthesis is the process in which light energy is transformed into food energy.

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2 years ago
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A hydrate is compound that included water molecules within its crystal structure. During an experiment to determine the percent
stellarik [79]

Answer:

The percent by mass of water in this crystal is:

  • <u>21.4%</u>

Explanation:

This exercise can be easily solved using a simple rule of three where the initial weight of the hydrated crystal (6,235 g) is taken into account as 100% of the mass, and the percentage to which the mass of 4.90 g corresponds (after getting warm). First, the values and unknown variable are established:

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The calculated value is not yet the percentage of the water, since the water after heating the glass has evaporated, therefore, the remaining percentage must be taken, which can be calculated by subtraction:

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4 0
3 years ago
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Which of the following is true of solids?
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This is because the rest are false, as solids are able to melt, and do have melting points. Also, not all solids have the same melting points. 
5 0
3 years ago
THIS IS A SCIENCE QUESTION
MissTica

Answer:

A

Explanation:

Hot air is less dense therefore it rises. Cold air is more closely packed therefore it is more dense. Less dense things rise while more dense things sink.

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Hope this helps :)

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3 years ago
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