The total number of electrons present in `18 mL` of water is ……

Options

A. `6.02 xx 10^(23)` atoms of H
B. `6.02 xx 10^(25)`
C. `6.02 xx 10^(24)`
D. `6.02 xx 18 xx 10^(23)`

Answer

C

Explanation

Mass of water = 18 mL `xx 1g mL^(-1) = 18 mg = 1` mol
No. of molecules in 1 mol of water `=6.02 xx 10^(23)`
No. of electrons in 1 molecules of water
`=2+8=10`
No. of electrons in 1 molecule of water
`=6.02 xx 10^(23) xx 10`
`=6.02 xx 10^(24)`