find total number of lone pairs present in 1.5 moles of water

Dear student,

Lone pair:- Those pair of electrons which do not take part in bond formation is called as Lone pair of electrons.

1 molecule water has 2 lone pairs.
So,1 mol water will have 2 mol lone pairs.
And
​​​​1.5 mol water will have 3 mol lone pairs.

Regards