Average distance between water molecules

Click For Summary
The average distance between water molecules at room temperature and pressure can be estimated using the density of water, which is 1 g/cm³, and its molecular weight of 18 g/mol. This information allows for the calculation of the number of moles in a given volume, leading to an understanding of molecular spacing. However, direct answers to homework questions are discouraged to promote independent learning. Instead, participants are encouraged to provide hints and guidance. Understanding these concepts is essential for grasping molecular interactions in water.
hgbreton
Messages
2
Reaction score
0
Does anyone know what the average distance between water molecules at rtp is, or how I could work this out?

Thanks

hgbreton
 
Physics news on Phys.org
Taking into account the density of water = 1 Kg/L = 1 g/cm3 and the molecular weight to be 18 g/mol then the number of moles found in unit volume is:

<< complete solution deleted by berkeman >>
 
Last edited by a moderator:
thanks!
 
huda123 said:
Taking into account the density of water = 1 Kg/L = 1 g/cm3 and the molecular weight to be 18 g/mol then the number of moles found in unit volume is:

<< complete solution deleted by berkeman >>

Welcome to the PF, huda123.

Please take care not to give out answers to homework/coursework questions. It is against the PF Homework Help rules. Please see the "Rules" link at the top of the page.

Please instead provide hints, or clarifying remarks, and be tutorial in your help here. Our goal is to help the original poster (OP) to figure out the problem on their own. After all, that is how they will learn the material the best.
 

Thread 'Magnitude of buoyant force in fluids of different densities'

The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?
View full post »

Similar threads

Average Separation between molecules in hydrogen at STP (Alonso Finn Problem)
  • · Replies 17 ·
Replies
17
Views
3K
Question about direction of movement of water molecule
  • · Replies 4 ·
Replies
4
Views
1K
Volume occupied a single molecule of water.
  • · Replies 9 ·
Replies
9
Views
4K
Pressure inside a sealed container
  • · Replies 9 ·
Replies
9
Views
2K
Two Equations for Average Velocity?
  • · Replies 2 ·
Replies
2
Views
3K
Force due to Surface tension here
  • · Replies 11 ·
Replies
11
Views
3K
Formula for the average EMF of generator
  • · Replies 6 ·
Replies
6
Views
953
Temperature & Gas: Correct or Incorrect?
  • · Replies 12 ·
Replies
12
Views
2K
Average velocity of gas molecules in a container
  • · Replies 3 ·
Replies
3
Views
5K
Bond energy between two water molecules
  • · Replies 3 ·
Replies
3
Views
2K