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Natasha_Volkova [10]
3 years ago
10

BRAINLIeSt TO FIRST Which is a correct method used in a scientific experiment involving acid and base solutions? (2 points) Sele

ct one: a. Using a pH test strip to measure the oxygen content of a solution b. Adding an indicator to a solution to test its acidity c. Adjusting the recorded pH measurements to prove the hypothesis d. Measuring the pH of a test strip by dipping it into an indicator
Chemistry
1 answer:
Komok [63]3 years ago
8 0

Answer:

B, adding an indicator to a solution to test its acidity

Explanation:

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The most likely van't Hoff factor for an 0.01 m calcium iodide solution is
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This problem is providing us with the molality of a solution of calcium iodide as 0.01 m. So the most likely van't Hoff factor is required and theoretically found to be 3 due to the following:

<h3>Van't Hoff factor:</h3>

In chemistry, the correct characterization of solutions also imply the identification of the ions it will release in aqueous solution. For that reason, the van't Hoff factor gives us an idea of this number, according to the formula the solute has got.

In such a way, for calcium iodide, we write its ionization equation as shown below:

CaI_2\rightarrow Ca^{2+}+2I^-

Assuming it is able to ionize due to the low molality, because if it was higher, then it won't ionize. Hence, since we have three moles of ion products, one Ca²⁺ and two I⁻, we can conclude the van't Hoff factor would be 3, although calculations may lead to a different, yet close result.

Learn more about the van't Hoff factor: brainly.com/question/23764376

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3 years ago
5. Students hypothesize that temperature is a limiting factor for the germination of seeds. They carry out an experiment to
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