Question

How many oxygen atoms are there in 0.25 mole of CO2?

Answer 1

Answer:

It is known that 1 mol of a molecule contains 6.023×1023 6.023 × 10 23 number of molecules. So, 0.25 moles of CO2 C O 2.

Answer 2

The correct option for the given question about Mole Concept is Na / 2 atom of oxygen.

What is mole?

• In chemistry, a mole is a unit.

• A mole of a substance is the mass of the substance containing precisely 12 gram of the same number of atoms as 12C.

• The mole is the SI unit used to measure a substance's quantity.

• It has the symbol mol.

How to solve this question?

In 1 mole number of molecules of CO₂ = Na (Avagadro Number)

In 0.25 mole number of molecules of CO₂ = 0.25 × Na molecules

In 1 molecule number of oxygen atom = 2 atom

In 0.25 × Na molecules number of oxygen atom = 2 × 0.25 × Na atom

In 0.25 × Na molecules number of oxygen atom = 0.5 × Na atom

So in 0.25 mole of CO₂ number of oxygen atom = Na / 2 atom

Thus we can conclude that in 0.25 mole of CO₂ number of oxygen atom will be Na / 2, where Na is Avagadro Number.

Learn more about Mole Concept here:

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