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Shalnov [3]
3 years ago
3

Which statement about the relationship between laws, hypothesis, and theories is true?

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

The question is incomplete, the complete question is;

Which statement about the relationship between laws, hypotheses, and theories is true?

A.

Laws that remain true over an extended period of time are considered theories.

B.

A theory that holds true for a long time is considered a law.

C.

If a law is not contradicted after a lot of testing, it may be considered a hypothesis.

D.

If a hypothesis is not contradicted after a lot of testing, it may be considered a law.

Answer:

If a hypothesis is not contradicted after a lot of testing, it may be considered a law.

Explanation:

A hypothesis is an intelligent guess which is put forward to explain a particular scientific observation. Hypothesis are temporary explanations that must be subjected to rigorous scientific investigation.

If a hypothesis holds true for some time it is regarded as a theory. The theory is also subjected to further rigorous scientific experiments to see if it can be regarded as a law.

If the statement of the hypothesis is not contradicted after a lot of testing, it may be considered a law.

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4 years ago
When reacting Na with Cl2 , we calculated that the theoretical yield should be 12.5 grams. Our actual yield was 13.0 grams. What
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Answer:

\boxed {\boxed {\sf 104 \%}}

Explanation:

Percent ratio is the ratio of the actual yield to the theoretical yield. The formula is below.

Percent \ Yield} = \frac{{Actual \ Yield}}{{Theoretical \ Yield}} \times 100 \%

The reaction of sodium and chlorine should theoretically yield 12.5 grams, but the actual yield was 13.0 grams.

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Substitute these values into the formula.

Percent \ Yield} = \frac{{13.0 \ g }}{{12.5 \ g}} \times 100 \%

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