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
saul85 [17]
2 years ago
5

How many moles of electrons are required to reduce one mole of oxygen gas (O2) to two moles of oxygen ions (O2-)?

Chemistry
2 answers:
sergey [27]2 years ago
7 0
O₂ + <u>4e⁻ </u>------> 2O²⁻

:)
mafiozo [28]2 years ago
6 0

Answer:

The correct answer is 4 electrons.

Explanation:

Reduction reaction is defined as chemical reaction in which element gains electrons and it get reduced. Also oxidation state of that element also deceases.

O_2+e^-\rightarrow 2O^{2-}

Charge on both sides should be balanced so for that write 4 as a coefficient of en electron in an above reaction.By this the charge on booth sides becomes (4-).

O_2+4e^-\rightarrow 2O^{2-}

1 mole of oxygen gas gets reduced by 4 electrons into 2 moles of oxygen  ions.

You might be interested in
How can a substance stay at a certain temperature even though it is being heated?​
SOVA2 [1]
The temperature of a certain substance can be seen as the average speed of the atoms or molecules in that substance. In the liquid state of a substance the forces between the atoms or molecules are strong enough to keep them together, however with enough freedom to move, unlike in the solid state. If we would have a closer look at the surface of a liquid from sideways, we would see water molecules jumping out of the water and reentering it again. The lower the water temperature would be the lesser the amount of water molecules leaving the liquid phase would be. If water would be heated up and the temperature will reach 100 degrees C at normal atmospheric pressure, more water molecules would leave the water than reentering. Boiling has started. The temperature of the water remains at 100 degrees C, if the heating continues as the average speed of molecules will not increase, only the rate of molecules leaving the water will increase, until all the water in liquid state has been vapourized. The amount of heat needed to vapourize liquid water is called latent heat. Latent heat is a very important driving factor in the atmosphere and thus the weather.
5 0
2 years ago
Explain why the lattice energy of CaSe is approximately 4 times as large as that of KBr. Check all that apply. Check all that ap
Elza [17]

Answer:

According to Coulomb’s law, the Ca and Se ions have 4 times the attractive force (2+ × 2-) than that of the K and Br ions (1+ × 1-).

Explanation:

From Coulomb's law, the attractive force between calcium and selenium ions is four times the attractive force between potassium and bromide ions.

This has something to do with size and magnitude of charge. Calcium ions and selenide ions are smaller and both carry greater charge magnitude than potassium and bromide ions. This paves way for greater electrostatic attraction between them when the distance of the charges apart is minimal. Hence a greater lattice energy.

4 0
2 years ago
If a person eats a tomato, the person is a ...
nadezda [96]
Primary hope this helps
8 0
3 years ago
Read 2 more answers
A 35,000 Newton car runs up a hill that is 45.5 meters high in 1.6 seconds. what power did it exert?
Evgesh-ka [11]

Answer:

995.313KW

Explanation:

the explanation is in the picture

please like and Mark as brainliest

7 0
2 years ago
Which type of molecule is used by organisms to store and transmit genetic information?
Andre45 [30]
It’s RNA and DNA that stores and transmits genetic information
8 0
3 years ago
Read 2 more answers
Other questions:
  • Where does biomass comes from
    11·1 answer
  • A pump contains 0.5 l of air at 203 kpa. you draw back on the piston of the pump, expanding the volume until the pressure reads
    11·1 answer
  • What is the meaning of radioactive substance​
    8·2 answers
  • The voltage generated by the zinc concentration cell described by the line notation Zn ( s ) ∣ ∣ Zn 2 + ( aq , 0.100 M ) ∥ ∥ Zn
    14·1 answer
  • Select the correct answer.
    10·1 answer
  • Predict the outcome of this reaction. Balancing doesn't matter. <br><br> Mg + H2O --&gt;
    9·1 answer
  • Electromagnetic waves can transfer with or without blank
    9·2 answers
  • Spell out the full name of the compounds<br> Help plz
    14·1 answer
  • The table below gives the numbers of protons, electrons, and neutrons in four atoms.
    12·1 answer
  • Give reasons.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!