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As others have written in the comments, there are large parts of your question that can't be answered by experiment. However, it is possible to come up with a mechanistic hypothesis (and even better, …

Analysis just based on ideal local geometry [OP in comments] But here won't the carbon be strained as it is sp3 and and the bond angle is too large In a regular pentagon, the angle at each corner is …

When you take a single somatic cell that is not replicating, lyse it, remove the membrane lipids, remove all the protein, you would be left with just nucleic acids. If each DNA strand were intact, and …

This is a summary of the account by Peter Brzezinski, Professor of Biochemistry, Stockholm University, Member of the Nobel Committee for Chemistry from the Scientific Background document. [Brzezin …

It is a projection. Depending on the orientation of a water molecule with respect to the projection plane, the projected angle can be anywhere from zero to 180 degrees. Similarly, the angles in ethane …

This one is inspired by ideas from Ed V and Todd Minehardt. The cool thing is that the angles are pretty accurate if the chop sticks reach into the opposite corners of the cube: As a bonus, you can …

In a Lewis structure, you are free to draw any bond angles and sketch any conformation, no matter whether it matches real bond angles and common conformations. In the way the polypeptide is drawn in t …

An alkane with 60 carbon atoms has the formula $\ce{C60H122}$. To get the degree of unsaturation of fullerene, you have to successively add dihydrogen to it until you have an alkane. For each double b …

Depending whether you have a molecular, metallic or ionic compound, the independently moving particles in the liquid state are molecules, atoms and ions, respectively. So for a molecular solid, you ha …

You don't have to do anything for benzene because it occurs in every choice. You have to compare $\ce{SO2}$ and $\ce{SO3-}$ because they distinguish A) from B) and C) from D). You have to compare $\c …

In the mid-20th century, instrumental methods available to organic chemists were nuclear magnetic resonance (NMR), infrared spectroscopy (IR), mass spectrometry (MS) and X-ray diffraction (crystallogr …

The first carbon $\ce{C}$ has 4 pairs of electrons, all of which are bonding. Using the VSEPR notation, $\ce{AX4}.$ For the second carbon $\ce{C'}$ it's exactly the same. Therefore, molecular geometr …

In $\ce{NH3}$ and $\ce{NF3}$, $\ce{F}$ having higher electronegativity than $\ce{H}$, $\ce{NF3}$ has a smaller bond angle compared to $\ce{NH3}$. Both of these compounds have a lone pair on the cent …

Definition Protein backbone dihedral angles are called φ (phi), involving the backbone atoms COn-1 - Nn - Cαn - COn , ψ (psi) involving the backbone atoms Nn - Cαn - COn - Nn+1) and ω (omega) involvi …

The solid elements are the symmetry operations. The plus and open circle symbols show the positions of atoms and their symmetry mates. The center of the circle is the z-axis. The edge of the circle ar …