How many moles of CO2 are present in a gas jar containing 1.506 × 1023 molecules of carbon dioxide? 

This question was previously asked in
AAI Junior Assistant (Fire Service) Official Paper (Held On: 15 Nov 2022 Shift 1)
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  1. 0.5
  2. 1
  3. 2
  4. 0.25

Answer (Detailed Solution Below)

Option 4 : 0.25
Free
ST 1: English
20 Qs. 20 Marks 25 Mins

Detailed Solution

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The correct answer is 0.25

Concept:

Mole:

  • The mole is a unit of measurement for the amount of substance.
  • One mole of any substance contains exactly entities (this number is known as Avogadro's number .
  • Formula to calculate moles:

Calculation:

Given,

Number of molecules of

Avogadro's number,

Number of moles of ,

⇒ 

∴ The number of moles of  present is 0.25.

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