Volume occupied by one molecule of water (density = 1 g `cm^(-3)`)

Options

A. `3.0 xx 10^(-23) cm^(3)`
B. `5.5 xx 10^(-23) cm^(3)`
C. `9.0 xx 10^(-23) cm^(3)`
D. `6.023 xx 10^(23)` cm

Answer

A

Explanation

`m = V xx d `
` 18 = V xx 1 rArr V = 18 mL`
`6.02 xx 10^(23)` molecules occupied ` = 18 cm^(3)`
1 molecule occupied `= (18)/(6.02 xx 10^(23)) = 3 xx 10^(-23) cm^(3)`