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Papessa [141]
3 years ago
8

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:

You might be interested in
Consider the reaction:
Fofino [41]

The mass in grams of NH₃ produced from the reaction is 3.4 g

<h3>Balanced equation</h3>

We'll begin by writing the balanced equation for the reaction. This illustrated below:

N₂ + 3H₂ -> 2NH₃

From the balanced equation above,

1 dm³ of N₂ reacted to produced 2 dm³ NH₃

<h3>How to determine the volume of NH₃ produced</h3>

From the balanced equation above,

1 dm³ of N₂ reacted to produced 2 dm³ NH₃

Therefore,

2.24 dm³ of N₂ will react to produce = 2.24 × 2 = 4.48 dm³ of NH₃

<h3>How to determine the mass of NH₃ produced</h3>

We'll begin by obtained the mole of 4.48 dm³ of NH₃. Details below:

22.4 dm³ = 1 mole NH₃

Therefore,

4.48 dm³ = 4.48 / 22.4

4.48 dm³ = 0.2 mole of NH₃

Finally, we shall determine the mass of NH₃ as follow:

  • Molar mass of NH₃ = 17 g/mol
  • Mole of NH₃ = 0.2 mole
  • Mass of NH₃ =?

Mass = mole × molar mass

Mass of NH₃ = 0.2 × 17

Mass of NH₃ = 3.4 g

Learn more about stoichiometry:

brainly.com/question/13196642

#SPJ1

4 0
1 year ago
Need help I don't remember what to do?
Lina20 [59]
I'm just doing the ones that you don't have numbers already for.
2.) just leave it alone and it's correct
3.) Mg + 2AgNo3 --> Mg(No3)2 + 2Ag
5.) just leave it alone and it's correct
8.) 10C3H8O3 + 15O2 --> 30CO2 + 4H2O
10.) P4 + 6Br2 --> 4PBr3
12.) 2FeCl3 + 6NaOH --> 2Fe(OH)3 + 6NaCl
13.) 2CH3OH + 3O2 --> 2CO2 + 4H2O
14.) 2Al + 3Cu(NO3)2 --> 2Al(NO3)3 + 3Cu
15.) 3CaCl2 + 2K3AsO4 --> Ca3(AsO4)2 + 6KCl
16.) 2NH3 --> N2 + 3H2
17.) 2H3PO4 + 3Ba(OH)2 --> Ba3(PO4)2 + 6H2O
19.) Mg3N2 + 6H2O --> 3Mg(OH)2 + 2NH3
I hope this helps you!!
4 0
3 years ago
Is A car traveling 33 km/h. accelerating
MArishka [77]

Answer:

where is the question?

Explanation:

5 0
3 years ago
Liquid hexane, C6H14, burns in oxygen gas to yield carbon dioxide and water. What is the minimum mass of oxygen required for the
Usimov [2.4K]

Answer: 46.6 grams

Explanation:

2C_6H_{14}+19O_2\rightarrow 12CO_2+14H_2O

Given : density of hexane = 0.660 g/ml

volume of hexane = 20 ml

Mass of hexane = {\text {density of hexane}}\times {\text {volume of hexane}}=0.660g/ml\times 20ml=13.2g

moles of hexane =\frac{\text {given mass}}\times {\text {molar mass}}=\frac{13.2g}{86.18g/mol}=0.15moles

According to stoichiometry :

2 moles of hexane reacts with 19 moles of oxygen

Thus 0.14 moles hexane will react with =\frac{19}{2}\times 0.15=1.45 moles of oxygen

Mass of oxygen =moles\times {\text {molar mass}}=1.45\times 32=46.6g

Thus minimum mass of oxygen required for the complete reaction of 20.0 mL of hexane is 46.6 grams.

7 0
4 years ago
A system initially has a pressure of 12 atm and a volume of 9 L. What is the volume if the pressure is decreased to 6 atm?
Evgesh-ka [11]

Answer:

<h3>The answer is 18 L</h3>

Explanation:

In order to find the volume , we use the formula for Boyle's law which is

P_1V_1 = P_2V_2

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

Since we are finding the final volume

V_2 =  \frac{P_1V_1}{P_2}  \\

From the question

P1 = 12 atm

V1 = 9 L

P2 = 6 atm

We have

V_2 =  \frac{12 \times 9}{6}  =  \frac{108}{6}  \\

We have the final answer as

<h3>18 L</h3>

Hope this helps you

5 0
3 years ago
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