The number of water molecules in 250 mL of water is closest to
[Given: Density of water is `1.0g" "mL^(-1)`, Acogadro's number `=6.023xx10^(23)`]

Options

A. `83.6xx10^(23)`
B. `13.9xx10^(23)`
C. `1.5xx10^(23)`
D. `33.6xx10^(23)`

Answer

A

Explanation

Volume of `H_(2)O=250ml,`
Weight of water = 250 gm,
Number of male of `H_(2)O=250/18`
Number of mulecule of `H_(2)O=250/18xxN_(A)=83.6xx10^(23)`