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a. What is the volume of one molecule of...

a. What is the volume of one molecule of water (density of `H_(2) O = 1 g cm^(-3)`)
b. What is the radius of the water molecule assuming it to be spherical.
c. Calculate the radius of the oxygen atom, assuming the oxygen atom occupies half of the volume occupied by the water molecule.

A

`18 cm^(3)`

B

`22400 cm^(3)`

C

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

D

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

Text Solution

Verified by Experts

The correct Answer is:
D
`18 g` water has `N` molecules
`:. 1 g or mL` water of `=(N)/(18)"molecules"`
Now `(N)/(18)` molecule occupy volume `=1 cm^(3)`
`:. 1` molecule occupy volume `=(18)/(N)cm^(3)`
`=(18)/(6.023xx10^(23))=3.0xx10^(-23)cm^(3)`
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