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NeX [460]
2 years ago
7

The chart below gives the atomic number and mass number of two elements.

Chemistry
1 answer:
elixir [45]2 years ago
4 0
Element || has 9 protons. It’s F “Fluorine”.
And element | has 10 protons it’s Ne “Neon”.
Protons are located at the up of every single elements.
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statuscvo [17]

Answer:

23

Explanation:

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2 years ago
The ionization constant for water (kw) is 9.311 × 10−14 at 60 °c. calculate [h3o+], [oh−], ph, and poh for pure water at 60 °c.
Sonbull [250]

As,

Kw = [H+] [OH-]

For water, [H+] = [OH-]

Therefore we can write

Kw = [H+]²

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5 0
3 years ago
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Burka [1]

Answer:

a) 0,014 min⁻¹

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Explanation:

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As half-life is 726s. In 726s the concentration will be 0,300M, In the next 726s the concentration will be 0,150M. Thus, thae time it takes to decrease concentration until 0,150M is 726s×2= 1452 seconds

c) In the same way, 11072 years are 4 half-life for this reaction, thus:

0,345M/2⁴ = 0,02156 M

d) By definition of half-life, the less half-life, the faster rate. Thus, The faster rate is for the reaction A.

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I hope it helps!

7 0
3 years ago
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I think the correct answer from the choices listed above is option B. It would be a leaf changing color in autumn <span>would a chemist be most likely to study. A chemist should be more interested in processes that chemical reactions are most likely to occur and changes in color can be one of the indications of such reactions.</span>
6 0
3 years ago
The nucleus is positive in charge because it contains what?
a_sh-v [17]

Answer:

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5 0
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