How can I determine the shape of an oldie acid molecule?

AI Thread Summary
To determine the shape of an oldie acid molecule, the user has successfully calculated the volume and dimensions for parts A and B but is struggling with parts C and D. For part C, they are unsure how to apply the volume of a cuboid formula to find the dimensions of the molecule. In part D, they converted the density to g/cm³ and calculated the mass using the previously determined volume. The user seeks guidance on how to approach parts C and D effectively. Understanding the molecular orientation in relation to water is also a consideration in the discussion.
hexanimal
Messages
1
Reaction score
0
Homework Statement
Finding dimension of molecule and avagadros constant
Relevant Equations
Na = N/n
v = lwh
I have done all of the questions apart from c and d. For a I got the answer 2.58*10^_5 cm^3
B) 3.72*10^-7 cm
But for c I don’t really know how to start. I first thought of using the formula for volume of cuboid but don’t know how that’d give the answer for the dimension.
For D, I turned the density from 890 kg m^-3 to 0.89 g cm^-3, found the molecular mass to be 282 and from my previous question used the volume v = 2.58*10^-5 to get mass = 2.2962*10^-5g from the formula p =m/v.
I’d just like to know how to do c and d, thanks for your help
 

Attachments

  • 71CCD00E-2B18-4329-B9E4-5278E5A79F74.jpeg
    71CCD00E-2B18-4329-B9E4-5278E5A79F74.jpeg
    92 KB · Views: 111
Physics news on Phys.org
hexanimal said:
Homework Statement:: Finding dimension of molecule and avagadros constant
Relevant Equations:: Na = N/n
v = lwh

But for c I don’t really know how to start.
Consider one molecule. How is it oriented on the water? Where are other molecules in relation to it?
 
Thread 'Minimum mass of a block'

Thread 'Minimum mass of a block'

Here we know that if block B is going to move up or just be at the verge of moving up ##Mg \sin \theta ## will act downwards and maximum static friction will act downwards ## \mu Mg \cos \theta ## Now what im confused by is how will we know " how quickly" block B reaches its maximum static friction value without any numbers, the suggested solution says that when block A is at its maximum extension, then block B will start to move up but with a certain set of values couldn't block A reach...
View full post »
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Similar threads

Are the 2nd and 3rd problems in this video correctly solved? (charged dipole and organ pipe problems)
Replies
3
Views
1K
Depth of a basketball floating on water
Replies
9
Views
875
I need opinions on a Projectile Motion problem that I made up
Replies
11
Views
2K
The density of a proton (hydrogen nucleus)
Replies
9
Views
2K
Need to derive a formula for the number of red giants
Replies
8
Views
1K
Understanding Pressure and Volume in a U-shaped Tube
Replies
13
Views
3K
Leakage of Air in a Spacecraft
Replies
16
Views
1K
Will the displacement of a solid ball affect the water level?
Replies
7
Views
2K
Photon Arrival Rate, Chapter 1.5 from Computer Graphics by Folly
Replies
15
Views
2K
What is the density of pure chromium in g cm^-3?
Replies
44
Views
4K

Hot Threads

Recent Insights

Back
Top