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  • Give answer! What are the number of moles in 8 g ofHelium?

What are the number of moles in 8 g of Helium?

  • Option 1)

    2 moles

  • Option 2)

    2.5 moles

  • Option 3)

    1.5 moles

  • Option 4)

    1 mole

 

Answers (1)

best_answer

As we learnt in 

Mole Concept -

One mole is the amount of a substance that contains as many particles or entities as there are atoms in exactly 12 g (or 0.012 kg) of the 12C isotope.

- wherein

one mole = 6.0221367 X 1023   

 

Mass of one mole of helium = 4g

So, Moles of helium = \frac{8g}{4g} =2  

 


Option 1)

2 moles

Correct

Option 2)

2.5 moles

Incorrect

Option 3)

1.5 moles

Incorrect

Option 4)

1 mole

Incorrect

Posted by

Aadil

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