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
aksik [14]
3 years ago
9

The mass number of a fluorine (F) atom is 19 . How many neutrons does it have

Chemistry
1 answer:
kiruha [24]3 years ago
5 0
I think it would have 10 neutrons. Hope this helps :)
You might be interested in
Calculate the mass of solid sodium that's needed to fully react with 4.0 L of chlorine gas at STP.
aalyn [17]

Answer: 8.28g Na

Explanation: use ideal gas law

PV= nRT

Solve for moles of Cl2

n= PV/ RT

Substitute:

= 1 atm x 4.0 L / 0.08205 L.atm/ mol. K x 273 K

= 0.18 moles Cl2

Do stoichiometry to solve for m of Na

2 Na + Cl2 => 2 NaCl2

=0.18 moles Cl2 x 2 mol Na/ 1 mol Cl2 x 23g Na / 1 mol Na

= 8.28 g Na.

5 0
3 years ago
If carbon lost one proton, what atom would be formed
Rudiy27

Answer:

boron

Explanation:

boron has 5 protons and carbon has 6, so if carbon lost a proton, it would become boron since each element has a unique number of protons.

5 0
3 years ago
Which of the following is an example of a change of state?
lord [1]

Answer:

Option B

Explanation:

  • For Option A the state is not changing but just has different look now.
  • For Option B the state is changing from gas to liquid drops due to cold glass
  • For Option C it hasn't changed state as both corn and flower is solid
  • For Option D paper and ash are both solids

Therefore our answer must be Option B

6 0
2 years ago
Which of the following is the correct formula for sodium oxide? NaO2 Na­O Na2O3 Na3O4 Na2O
olga nikolaevna [1]
Since Na has a 1+ charge and O has a -2 charge, by reversing the charges and placing them as subscripts for the other atoms the formula is Na2O1 or simply Na2O.
7 0
3 years ago
Convert 947400 s to cs
Gennadij [26K]

Answer:image

Explanation: image

3 0
3 years ago
Other questions:
  • At the end of mitosis the cells produced are identical to each other is it True or False
    14·2 answers
  • Now imagine you have several of such dipoles, and place them regularly between the plates. For this part of the pre-lab, you can
    8·1 answer
  • Ionic crystals have high boiling points because:
    9·1 answer
  • A ball has a volume of 6.35 liters and is at a temperature of
    7·1 answer
  • Lividity in a dead body is caused by capillaries decaying due to de-oxygenation.
    7·2 answers
  • It is necessary to make 225 mL of 0.222 M solution of nitric acid. Looking on the shelf, you see only 16 M nitric acid. How much
    11·1 answer
  • What is the speed of a wave with a frequency of 2 Hz and a wavelength of 87m (subject is science) pls answer fast
    12·1 answer
  • If you have 50 grams of water, how many moles would that be?*
    12·1 answer
  • The equation for photon energy, E , is
    12·1 answer
  • A fischer projection results due to the formation of a hemiacetal bond.<br> a. true <br> b. false
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!