Question

give reason the number of molecules in 9 gm of water is equal to the number of molecules in 39gm of aromatic benzene C6H6​

Answer 1

Answer:

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

Moles of benzene =

780.039

=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

Explanation:

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