Calculate the number of Carbon atoms in 39 g of Benzene.
2 N
5 N
3 N
6 N
As we learnt in
Molar Mass -
The mass of one mole of a substance in grams is called its molar mass.
- wherein
Molar mass of water = 18 g mol-1
Molar mass of benzene = 78g
Number of moles in 39 g = 39/78 = 0.5 moles
Number of Carbon atoms = = 3 moles
Option 1)
2 N
Incorrect
Option 2)
5 N
Incorrect
Option 3)
3 N
Correct
Option 4)
6 N
Incorrect
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