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castortr0y [4]
3 years ago
7

The usefulness of mendeleev s periodic table was confirmed by

Chemistry
1 answer:
BigorU [14]3 years ago
7 0
In the table of mendeleev, the lines feature the elements in increasing order of atomic mass<span>.
</span>
hope this helps!
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Answer:

not valid

Explanation:

Expert judgment is a useful validation method to verify the reliability of an investigation that is defined as “an informed opinion of people with experience in the subject, who are recognized by others as qualified experts in it, and who can give information, evidence, judgments and assessments ”

After submitting an instrument for comparison to the consultation and expert opinion, it must meet two quality criteria: validity and reliability. The validity of content is often established based on two situations, one that concerns the design of a test and the other, the validation of an instrument subject to translation and standardization procedures to adapt it to different cultural meanings. It is here that the task of the expert becomes a fundamental task to eliminate irrelevant aspects, incorporate those that are essential and / or modify those that require it.

5 0
4 years ago
Which of the following list all the elements that are present in a molecule of potassium carbonate K2C03?
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Answer:

I think No

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7 0
3 years ago
Water vapor changing to liquid water
kiruha [24]

Explanation:

When water vapour changes to liquid water then this process is known as condensation.

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4 0
3 years ago
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siniylev [52]

Answer:

The correct answer is "They can be separated by physical processes"

Explanation:

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Mixtures can be divided into those that are homogeneous or heterogeneous meaning that they can be distributed evenly or can't be distributed evenly.

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4 years ago
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