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cestrela7 [59]
3 years ago
14

Which of these statements best explains why chemistry is reliable?

Chemistry
1 answer:
Dominik [7]3 years ago
7 0

Answer:

It gives the same result when an experiment is repeated.

Explanation:

Below are the possible answers to the question:

<em>It is biased. </em>

<em>It cannot be verified. </em>

<em>It cannot add new evidence to existing evidence. </em>

<em>It gives the same result when an experiment is repeated.</em>

<em />

<em>The correct answer would be that </em><em>it gives the same result when an experiment is repeated.</em>

If a reaction is conducted in chemistry and certain results are obtained, once a detailed procedure of the experiment is known along with all the chemicals involved, such reaction/experiment can be repeated anywhere in the world and the same result would be obtained.

<u>The repeatability of experiments always makes the experiments to be reliable.</u> Hence, chemistry is reliable because it gives the same result without any variation when experiments are repeated under similar conditions.

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In the chemical reaction: NaOH (s) + H2O Na+ (aq) + OH- (aq), which substance (or substances) is in solution? A. Na+ (aq) only B
bonufazy [111]

Answer:

in a chemical reaction of NaOH with H2O, after NaOH is completely disassociated, we will find Na+ and OH- ions in the solution. (option C).

Explanation:

In a reaction where NaOH is added to H2O.

NaOH is considered a strong base, this means that in an aqueous solution ( in water) it's  able to completely disassociate in ions.

There will not remain any NaOH in the solution. This means option D is not correct.

The ions in which NaOH will disassociate are : NaOH → Na+ + OH-

These ions we will find in the solution.

Not only Na+ because NaOH is a strong base, so there will be a lot of OH- ions as well in solution.

This means in a chemical reaction of NaOH with H2O, after NaOH is completely disassociated, we will find Na+ and OH- ions in the solution.

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Serggg [28]
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What is the atomic number of the element located in group 16
laila [671]

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Explanation:

Sulfur is a chemical element that is represented with the chemical symbol "S" and the atomic number 16 on the periodic table.

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Have a nice night!

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Help this is not that hard I think
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Answer:

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Explanation:

Hope this helps

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