Does the molecule which has the structural formula:CClH2F have mirror image isomer?
No, there are only 3 different groups attached to the carbon atom, so the mirror image can be superimposed.
200
What is the main part of function process of smelling within the nose to brain and what two aspects of molecule can it identify?
Olfactory epithelium, shape and size.
300
What possible smell(s) will you predict for the molecule with the molecular formula: C5H10O2?
Sweet or Putrid.
300
If a molecule has one of its hydrogen atom and one of its oxygen atom to be shown, what functional group can you predict for this molecule?
Carboxyl, ester, and hydroxyl.
300
If you drop a drop of a liquid on to a dish, and the drop remains there is very round to bead up, what does that tell you, provide at list 2.
Strong Intermolecular force, high boiling temperature, polar.....
300
Arrange the strength of forces from low to high: Ionic covalent, London dispersion force, hydrogen bond, covalent bond.
LDF < Hydrogen bonds (DDF)< Covalent
300
What type of molecule does not have a smell?
Provide at least 3.
Small nonpolar gas molecule, large polar and nonpolar solid molecules, metallic, ionic, network covalent molecules.
400
How is the Lewis dot structure different to the normal structural formula?
The Lewis dot structure can show the other lone pairs which the normal structural formula doesn't reveal, since the structural formula just shows the atoms and the bonds between, not included the pairs that are not boned.
400
What is the difference between a carboxyl and an ester functional group by looking at their structural formula?
The ester functional group has one oxygen atom attached with a double bond to a carbon atom which is next to another oxygen atom with one more carbon atom nearby with single bond, carboxyl has the same first part, but at last the one more atom attached to oxygen is a hydrogen.
400
How is the receptor site theory works? Explain, with description of brain and receptor site or directly explain with scientific theory.
"Lock and key"
400
In what case when a molecule is nonpolar? Provide at least 2.
Very small electronegativity difference
The force (based on dipole) is cancelled, such as CO2 which the carbon is balanced by oxygen that forces go two different ways to be cancelled.
A molecule with 2 identical atoms
400
Which two element on the periodic table can form the greast difference on electronegativity and which two can form the smallest (might be more than one, but not identical)?
Francium and Fluorine.
Ba Ra, La Ac, Ru Os......
500
Predict the smell of ethylthiol, C2H6S, as evident as possible.
Putrid. (Even it has some clues to find out its smell from the name, it actually smells like rotten cabbage.)
500
How is the functional group of aldehyde group look like?
An oxygen atom with a double bond attached to a carbon atom next to a hydrogen atom.
500
Predict or match the possible smells for each of the shapes that list here: long stringy, ring, ball.