Calculate # of molecules on the top layer of a surface if surface are is 19.625cm2. convert the surface area in cm2 to nm2 then multiply that by the surface area of a sodium stearate molecule. Help!

Question

abb0t · Answer

im assuming you have it in a tube, so use the formula for surface area of a cylinder.

anonymous · Answer

I  need to calculate the area of the circle formed (19.625 cm2) to molecules per layer.  I got the answer 6.01426x 10 E17 but I'm not sure...

anonymous · Answer

This is a tough question. Did you need to find radius at all?

anonymous · Answer

I already had to find the diameter of the circle formed by the sodium stearate molecule which was 5 cm.  I then had to calculate the surface area of the circle formed (3.14(5)squared/4=19.625 the next step was the original question I posted.

anonymous · Answer

I had a similar problem in my hw for last semester. I had to find the # of C & H atoms in a roll of 100ft^2 of polyethylene with a given density, width, length, and thickness. I'll show you how I solved it, maybe it'll help

anonymous · Answer

Is there anyway I can post a pic on this site for more clarity?

anonymous · Answer

Yeah. Attach file is under the chat

anonymous · Answer

Where is the chat located?

anonymous · Answer

The chat box you are typing in?

anonymous · Answer

Look I'll post a pic of what I'm looking at right now.

anonymous · Answer

attachment

anonymous · Answer

To the right is the similar problem I had. On the bottom where my mouse is point is the attach file box.

anonymous · Answer

I'm sorry I wasn't able to help you more. I have to finish my differentials hw before I get tired. I will look at your problem later if you still need help, but for now I have to go. Sorry..

anonymous · Answer

Thank you to everyone for your help!!!

anonymous · Answer

any further assistance anyone could offer would be much welcomed!