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# One Litre of Water Has 6.02 × 1026 Molecules. Estimate the Size of a Molecule. - ICSE Class 6 - Physics

ConceptConcept of Matter and And Composition

#### Question

One litre of water has 6.02 × 1026 molecules. Estimate the size of a molecule.

#### Solution

The size of a particle (or molecule of matter is very small. 1 litre of water has 6.02 × 1026molecules, so the volume of a particle of

water is (10^-3m^3)/(6.0 × 10^26) = 1.6 × 10^-30 m ^3.
Thus the diameter of a water molecule is nearly 1.27 × 10-9 metre

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#### APPEARS IN

Solution One Litre of Water Has 6.02 × 1026 Molecules. Estimate the Size of a Molecule. Concept: Concept of Matter and And Composition.
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