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

[markosheehan]

Why does cyclohexane float on water.? When I add up their relative molecular masses water has a lower value than cyclohexane?

 

[I like Serena]

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.

 

[markosheehan]

its to do with the hydrogen bonding .
thanks