The density of water at `4^@ C `is `1.0 xx 10^3 kg m^(-3)`. The volume occupied by one molecule of water is approximately

Options

A. `3.0 xx 10^(-23) mL`
B. `6.0 xx 10^(-22) mL`
C. `3.0 xx 10^(-21) mL`
D. `9.0 xx 10^(-23)mL`

Answer

A

Explanation

Mass of one molecule of water
` = (18)/( 6.023 xx 10^(23)) ~~ 3.0 xx 10^(-23)`
Volume `= 3.0 xx 10^(-23)` mL (density =` 10^3 kg m^(-3) ` = 1 g/mL)