MHB Why Does Cyclohexane Float on Water When Its Molecular Mass is Higher?

  • Thread starter Thread starter markosheehan
  • Start date Start date
  • Tags Tags
    Water
markosheehan
Messages
133
Reaction score
0
Why does cyclohexane float on water.? When I add up their relative molecular masses water has a lower value than cyclohexane?
 
Mathematics news on Phys.org
markosheehan said:
Why does cyclohexane float on water.? When I add up their relative molecular masses water has a lower value than cyclohexane?

Floating occurs when the mass density is lower.
So even though water consists of smaller molecules with less mass (10 versus 84 g/mol), water still has a greater density.
What could the difference be?
For the record, this topic also came up in http://mathhelpboards.com/other-topics-22/ethanol-water-21217.html of yours.
 
its to do with the hydrogen bonding .
thanks
 

Thread 'What Exactly is Dirac’s Delta Function? - Insight'

Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. In Dirac’s Principles of Quantum Mechanics published in 1930 he introduced a “convenient notation” he referred to as a “delta function” which he treated as a continuum analog to the discrete Kronecker delta. The Kronecker delta is simply the indexed components of the identity operator in matrix algebra Source: https://www.physicsforums.com/insights/what-exactly-is-diracs-delta-function/ by...
View full post »

Thread 'Fermat's Last Theorem'

Fermat's Last Theorem has long been one of the most famous mathematical problems, and is now one of the most famous theorems. It simply states that the equation $$ a^n+b^n=c^n $$ has no solutions with positive integers if ##n>2.## It was named after Pierre de Fermat (1607-1665). The problem itself stems from the book Arithmetica by Diophantus of Alexandria. It gained popularity because Fermat noted in his copy "Cubum autem in duos cubos, aut quadratoquadratum in duos quadratoquadratos, et...
View full post »
Thread 'Imaginary Pythagorus'

Thread 'Imaginary Pythagorus'

I posted this in the Lame Math thread, but it's got me thinking. Is there any validity to this? Or is it really just a mathematical trick? Naively, I see that i2 + plus 12 does equal zero2. But does this have a meaning? I know one can treat the imaginary number line as just another axis like the reals, but does that mean this does represent a triangle in the complex plane with a hypotenuse of length zero? Ibix offered a rendering of the diagram using what I assume is matrix* notation...
View full post »

Similar threads

MHB Why is Water Less Dense than Ethanol?
Replies
2
Views
3K
MHB Work energy principle and power
Replies
16
Views
2K
Engineering Hydrostatic Pressure of Ball Floating in Liquid
Replies
3
Views
2K
Does Throwing an Object Overboard Affect Pond Water Level?
Replies
2
Views
2K
Qualitatively assessing melting/boiling points.
Replies
5
Views
6K
B Does movement affect H2O freezing temperature?
Replies
16
Views
5K
I Can a hose spray higher than the water tower?
Replies
13
Views
1K
Cyclohexane Chair Conformations: Differences Explained
Replies
6
Views
4K
I Filling a pool with the hose end above or in the water
Replies
11
Views
3K
B Water Wicking between two containers
Replies
2
Views
271

Hot Threads

Recent Insights

Back
Top