1. The problem statement, all variables and given/known data There are 3.344 x 10^25 molecules in 1 kg (1 litre) of water. What is the distance between the molecules? 2. Relevant equations 3. The attempt at a solution I found the density of water in kg/m^3, then found # moles in 1 litre (55.6) and then from that using Na I found the # of molecules. Im unsure of where to go next with finding the distance betwee them.