1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
cupoosta [38]
3 years ago
7

How many valence electrons are found in the outermost energy level of fluorine ( f.?

Chemistry
1 answer:
Paraphin [41]3 years ago
3 0
There are 7 valence electrons
You might be interested in
use dimensional analysis to slove; a reasearcher is given 1.5 dry oz of a substance which he needs to evenly distribute over 10
Usimov [2.4K]

Answer:

4.25248 x 10^{6} μg per vial

Explanation:

Conversion Factors

28.3495231 g = 1 dry oz

10^{6} μg (micrograms) = 1 g

[(1.5 dry oz) x (28.3495231 g / 1 dry oz) x (10^{6} μg / 1 g)] / 10 vials = 4,252,428.465 μg / vial

8 0
3 years ago
Which of the following is the correct set up AND answer to convert 6.25 x
BlackZzzverrR [31]

Answer:

Explanation:

How many mols do you have?

1 mol = 6.02 * 10^23 atoms

x mol = 6.25 * 10 ^32 atoms

1/x = 6.02*10^23 / 6.25 * 10^32        Cross multiply

6.02 * 10^23 * x = 1 * 6.25 * 10^32    Divide by 6.02 * 10^23

x = 6.25 * 10*32/ 6.02 ^10^23

x = 1.038 * 10^9 mols which is quite large.

Find the number of grams. (Use the value for copper on your periodic table. I will just use an approximate number.)\

1 mol of copper = 63 grams.

1.038 * 10^9 mols of copper = x

1/1.038 * 10^9 = 63/x         Cross multiply

x = 1.038 * 10^9 * 63

x = 6.54 * 10^10 grams of copper.

7 0
3 years ago
Fuel Cells Rationale. With the focus on alternative clean-energy sources, we are moving toward an increased use of fuel cells to
kenny6666 [7]

water-gas shift membrane reactor(WGSM)

Explanation:

The major component in the processing train for fuel cells is the water-gas shift membrane reactors. Fuel cells offer a very clean and environmental source of energy production. They are usually tagged the future of energy production in the world.

  • Unlike the internal combustion systems that uses fossil fuels to produce energy, the water-gas shift membrane reactor allows for the production of energy using the combination of oxygen and hydrogen in the presence of a catalyst.
  • In the reactor, hydrogen gas is a able to readily diffuse out while the other components are unable to do so.

Learn more:

Burning brainly.com/question/9231468

Combustion brainly.com/question/9434360

#learnwithBrainly

6 0
4 years ago
Read 2 more answers
What substance do you get when you combine Bromine and Barium?
ddd [48]
Barium bromide is the chemical compound with the formula BaBr2. Like barium chloride, it dissolves well in water and is toxic.
5 0
3 years ago
Elemental analysis of the unknown gas from part a revealed that it is 30.45% n and 69.55% o. what is the molecular formula for t
Gnesinka [82]

Assuming we have 100 g of sample

30.45/MW of N 14g = 2.175

69.55/MW of O 16g = 4.34

4.34/2.185 = 2

for every 1 mole of N we have 2 moles of O

so the empirical formula would be NO2

without having the molecular weight of the entire molecule the molecular formula can not be determined with the information in your question

6 0
3 years ago
Other questions:
  • Name two animals that are omnivores. Give an example of a plant and an animal that each one might eat.
    7·2 answers
  • Areas of the periodic table that contain elements that form cations in ionic compounds.
    8·1 answer
  • magnesium sulphate solution reacts with barium chloride solution. what is the name of the precipitate
    7·1 answer
  • Which reaction releases the greatest amount of energy per 2 moles of product?
    6·1 answer
  • Phylogenetic trees are also called
    9·2 answers
  • Tests on human subjects in Boston in 1965 and 1966, following the era of atomic bomb testing, revealed average quantities of abo
    8·1 answer
  • How many molecules of sodium chloride are in 2.5 moles??
    8·1 answer
  • A scientist fills a balloon with gas at room temperature. The volume of the balloon is 150 cm3. Then, the scientist places the b
    11·2 answers
  • Chemical formula Be+2 + N-3
    7·1 answer
  • Identify how energy changed form so it could be use in each example.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!