Question

A glass of water contains 1.2 x 1024 molecules of water. An additional 4.0 moles of water are poured into the glass. How many moles of water are in the glass?

Answer 1

use avagadros number to find the moles from 1.2*10^24 molecules

Answer 2

molecules=number of moles x avagadros number

Answer 3

=2 mols + the additional 4 mols = 6 mols!