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3 years ago

How many electrons does fluorine have? How many electron shells? How many electrons are needed to fill the valence shell?

Chemistry

1 answer:

Alex17521 [72]3 years ago

7 0

Answer:

9 electrons when there is no charge shown. It has 2 shells, this is easy to see on the periodic table because it is in the second row. Otherwise you can count. There is 2 electrons on the inner shell then every shell after holds 8. Fluorine only has 9 electrons so 2 for the first shell and 7 on the outter shell. It needs 1 more electron to fill its outter (valence) shell.

Explanation:

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How do ions impact your life

Ostrovityanka [42]

Answer:

Increasing your concentration of negative ions is a very important way to improve your health for a variety of reasons. They work to increase serotonin levels in your body, which improves mood and balances your mental health, helping combat depression and anxiety.

Explanation:

7 0

3 years ago

Final Temperature in Heating Applesauce. A mixture of 454 kg of applesauce at 10°C is heated in a heat exchanger by adding 12130

jok3333 [9.3K]

Answer:

$T_f = 76.46°C$

Explanation:

Given data:

Mass of mixture = 454 kg

Initial temperature is 10°C

Heat added is Q = 121300 kJ

Heat capacity (Applesuace) at 32.8°C is 4.02kJ/kg K

From heat equation we have

$Q = mCp(T_f -T_i)$

$\frac{Q}{mCp} = (T_f -T_i)$

$T_f = T_i + \frac{Q}{mCp}$

Putting all value to get required final temperature value

$T_f = \frac{121300}{454\times 4.02} + 10$

$T_f = 76.46°C$

7 0

3 years ago

Which equation represents a neutralization reaction?

sergij07 [2.7K]

A neutralization reaction is in essence a reaction between an acid an a base which usually results in pH neutral compounds being formed (a salt and water). Therefor the answer would be OPTION A (<span>base + acid → salt + water)</span>

6 0

4 years ago

What ratio of nitrogen and hydrogen molecules would result in no left-over reactants? Explain your answer.

madam [21]

A ration, Nitrogen to Hydrogen, of 1 : 3 would result in no left-over reactants

Explanation:

This is because Nitrogen and Hydrogen would react to form ammonia as shown in the following reaction below;

N₂ (g) + 3H₂ (g) → 2NH₃ (g)

For every mole of Nitrogen gas, you would require 3 moles of Hydrogen gas. This way they would react to form Ammonia with no leftover reactants.

Learn More:

For more on balanced gas reaction equations check out;

brainly.com/question/3407131