Calculate the volume occupied by one molecule of water? (Given density 1 g cm^-3)

Answer:

Given

Density of water (ρ) = 1g/cm3

Molar mass of water (M) = 18 g/mol

∴ Molar volume (Vm) = M/ρ

Vm = 18 cm3/mol

∴ Volume of 1 molecule of water = Vm/NA

Where NA is Avogadro number

Volume of 1 molecule of water = 18/(6.022 × 1023)

Volume of 1 molecule of water = 2.989 × 10-23 ≈ 3 × 10-23.

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