I undsertand part A) and got 55.55 moles of water. Can you please help with parts B) and C). Thank you!

Basic notions of particle size, density, and kinetic pressure. (a) From the knowledge that water's molar mass is 18 g/mol, evaluate how many moles of water are contained in one liter of liquid water. (b) We define the volumetric size a of a particle as the size of a cube whose volume is equal to the specific volume v = V/N of the substance: a = 11/3. What is the volumetric size of water in the liquid state? What is the volumetric size of water in ice? Assuming one mole of water vapor occupies 22.4 Lwhich would be the case if the vapor were an ideal gas under standard conditionswhat is the speicific volume and the volumetric size of water in the vapor? How many more molecules of water, per unit volume, are in the vapor relative to the liquid? This exersize should give you a good idea just how dilute gases are at humanly relevant conditions. (c) In many cases, the kinetic pressure in equillibrated collections of hard objects, such as colloidal particles, can be profitably even if approximately estimated using the expression for the pres- sure of the ideal gas where instead of the volume we use the "free volume", or "available volume" Vf, which we compute by subtracting the total volume of the particles from the system's volume. And so for N hard spheres each of radius r, V; = V - N(47/3)r?. Estimate the kinetic pressure in liquid water assuming the molecules are hard spheres while the spacing between the spheres is one-tength of the particle size. (Use approximations to simplify life!) Basically, we have two factors that make the kinetic pressure in condensed media much greater than in gases: The much larger value of the density and the emergence of a new length scale, in addition to the volumet- ric size itself, the new scale corresponding to the small spacing between particles. This exercise should give you an idea as to just how high the kinetic pressure is condensates held together by chemical interactions and, conversely, how strong those molecular cohesive forces are