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
Name every block in mc
maks197457 [2]

Answer:

  • Andesite.
  • Bedrock.
  • Basalt. Smooth.
  • Blackstone.
  • Gilded.
  • Calcite.
  • Cobblestone.
  • Mossy.
  • Deepslate.
  • Diorite.
7 0
2 years ago
Read 2 more answers
How many plague hearts can be in one map at a time state of decay 2?
disa [49]

Answer : 10 plague hearts are there in one map at a time in state of decay 2


Explanation : The State of Decay 2 consists of 10 Plague Hearts which one needs to destroy and they are placed on randomly dotted areas around the map inside a searchable location on it.


With each heart that one destroys, the remaining other ones become a little bit tougher and are more heavily guarded by the undead people.

6 0
2 years ago
What is the crystalline arrangement of atoms shown here?
mixer [17]

Answer: Answer:

"The arrangement of atoms or ions in a crystal " is described by the terms body-centered cubic and face-centered cubic.

Explanation:

Face centred cubic system explains the crystal structure where an atom is present at each cubic corner of the crystal  and the centre of each cube face. Meaningfully, a closed packed plane where at each "face of the cube" atoms touch the alongside face diagonals.

Whereas in body centric cube system has the lattice point present at the 8 corners of  cell and an additional one at the center of the cell. Thus, both explains how the atom or ions are  placed or arranged in a crystal.

Explanation: Hope this helps :)

4 0
3 years ago
Calculate the mass of 488 moles of calcium carbonate
san4es73 [151]

Answer: 48800g

Explanation:

Using the mathematical relation : Moles = Mass / Molar Mass

Moles = 488

Molar mass of CaCO3 = 40 + 12 + (16 x 3) = 100g/mol

Therefore

488 = mass / 100 = 48800g

6 0
2 years ago
What is the valency of aluminium and nitrate in Al (NO3)3​
VikaD [51]

Answer:

Aluminum loses three valence shell electrons to become the aluminum ion Al+3. Nitrate is a polyatomic ion with the formula NO3 -1.

6 0
2 years ago
Other questions:
  • 1. john needs to create a buffered solution at a ph of 3.5 for his biomedical laboratory
    12·1 answer
  • In a chemical equation, what name does the left side have
    15·2 answers
  • Which substance is the least likely to dissolve in water?
    15·2 answers
  • Approximately how long has the Moon been geologically inactive?
    15·1 answer
  • At high temperatures, steam decomposes into its elements according to the following equation.
    11·2 answers
  • Ok so N2+O2=2NO and my delta h is 180.5 kJ I need to know. If I react 10 g of nitrous gas with excess oxygen how many grams of N
    10·1 answer
  • A carpenter uses a saw to cut a wooden board into two different sized pieces. Which of the following physical properties is most
    10·2 answers
  • When something heats up it moves faster when something close down it moves slower
    5·2 answers
  • Why are science safety rules important? PLZ DO NOT COPY AND PASTE
    13·1 answer
  • Which substance is most likely to dissolve in greater quantities in cold water
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!