4. What are the freezing and boiling points of water on the Fahrenheit scale? On the

1 answer:

3 0

Water freezes at 0 degrees Celsius and 32 degrees Fahrenheit.
It boils at 100 degrees Celsius and 212 degrees Fahrenheit.

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Which of the following is usually done last in the scientific method of investigation?

djverab [1.8K]

C - Analyze data and draw conclusions. After an experiment or in this case; an investigation, you would analyze your data that you collected from the investigation/experiment, and draw conclusions based on your data.

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Which line of evidence has been traditionally accepted as conclusive proof of evolution? the presumed age of the Earth the fossi

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The most generally accepted form of conclusive evidence for the theory of Evolution is the fossil record.

<h3>What is the theory of Evolution?</h3>

The theory of evolution was proposed by Charles Darwin.
It states that as time passes, organisms evolve to better adapt to their environments.
This is closely related to natural selection, which is considered a driving force of evolution.

<h3>How the fossil record supports this theory</h3>

The fossil record provides essential data to support this claim.
The data comes in the form of the comparison between fossils of two closely related organisms, separated by a matter of generations, that present changes in the genetic code that made them more apt for survival.

Therefore, we can confirm that the most generally accepted form of conclusive evidence for evolution is the presence of fossils that show the genetic correlation between two organisms and the progression of evolution between them.

To learn more about evolution visit:

brainly.com/question/2725702?referrer=searchResults

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3 years ago

What is the molar mass of CHCl3? 48.47 g/mol 83.92 g/mol 119.37 g/mol 121.39 g/mol

kolbaska11 [484]

119.37 g/mol

<h3>Further explanation</h3>

Relative atomic mass (Ar) and relative molecular mass / molar mass (M)

the molar mass/molecular mass of a compound : the sum of the relative atomic mass (Ar) of the constituent atoms

M AxBy = (x.Ar A + y. Ar B)

Atomic weight (Ar) of :

C : 12.0107 g/mol
H : 1.00784 g/mol
Cl : 35.453 g/mol

The molar mass of CHCl₃

$\tt CHCl_3=12.0107+1,00784+(35,453\times 3)=119.37~g/mol$

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How does knowing the equivalence point for a titration help pick out an indicator?

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Answer is: near equivalence point indicator should change color, so we must pick indicator who changes color near pH of equivalence point.
Equivalence point is the point which there is stoichiometrically equivalent amounts of acid and base. 
Chemist can draw pH curve (graph showing the change in pH of a solution, which is being titrated) for titration and determine equivalence point.

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Why aren't descriptive investigations repeatable?

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Descriptive investigations are mainly questions to uncover information. it does not have an hypothesis. It is mainly gathering information, it is not repeatable as you are just asking questions

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