Question

How many molecules are present in 1g of Benzene?

Answer 1

Answer:

Mass of 1 drop of benzene =0.05×0.78=0.039g

Moles of benzene =

78

0.039

=5×10

−4

1 mole of benzene contains 6×10

23

molecules.

∴ Molecules present in 1 drop =5×10

−4

×6×10

23

=3×10

20