rachis

13.01.2021 • 

Chemistry

This is how fluorine appears in the periodic table. Which is one piece of information that "9” gives about an atom of fluorine?

The atomic mass is different than the atomic number, and the number of neutrons is the difference between the atomic mass and the atomic number.

the atomic number
the atomic mass
the mass of protons
the number of neutrons

Ответ:

eriksprincess13

12.02.2021

Chemistry

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The atomic mass

Explanation:

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Ответ:

okokalyssa

12.02.2021

Chemistry

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B

Explanation:

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Ответ:

destinyranson

19.10.2020

Chemistry

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The difference is 2 pH units.

Explanation:

Let's give an arbitrary value to the H⁺ concentration of solution A, [H⁺]ₐ:

[H⁺]ₐ = 0.001 M

If that's the case then the pH of solution A would be:

pHₐ = -log(0.001) = 3

The H⁺ concentration of solution B ( [H⁺]ₓ ) is 100 higher than that, so:

[H⁺]ₓ = 0.001 * 100 = 0.1 M

And its pH:

pHₓ = -log(0.1) = 1

So the difference in pH values is:

pHₐ - pHₓ = 3 - 1 = 2

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