Q 8.     Convert into mole.

  (a)     12 g of oxygen gas 

Answers (1)

The molecular Mass of the Oxygen = 32 g

Now,

Since 32 g Oxygen = 1 mole 

The number of moles in 12 g Oxygen:

=\frac{1}{32}\times 12\:moles

=0.375\:moles

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