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The density of water is 1g//mL . What i...

The density of water is ` 1g//mL` . What is the volume occupied by 1 molecule Of water ?

A

`9.0xx10^(-23)cm^(3)`

B

`6.023xx10^(-23)cm^(3)`

C

`3.0xx10^(-23)cm^(3)`

D

`5.5xx10^(-23)cm^(3)`

Text Solution

Verified by Experts

The correct Answer is:
C
1 mole `=6.023xx10^(23)` molecule
`18g=6.02xx10^(23)` molecule
18 g = mass of `6.02xx10^(23)` water molecules Mass of one water molecule `=(18)/(6.023xx10^(23))g`
Density `=1 g cm^(-3)`
volume `=("Mass of one water molecule")/("Density")`
`=(18)/(6.023xx10^(23)xx1)cm^(3)`
`~~3.0xx10^(-23)cm^(3)`
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