Bond Rotation

For each compound in the table below, decide whether there would be any hydrogen-bonding force between molecules of the compound, or between molecules of the compound and molecules of water. compound hydrogen-bonding force Between Between molecules of formula or Lewis the compound and molecules of water? name molecules of the structure compound? H yes yes | H – c=N– H methanimine no no H yes Н —с —N— н | methylamine no yes yes dichloromethane CH, Cl, no no O O H- Z:

Consider the molecule of chloroform. Its tetrahedral structure is shown. H | CI CCI CI Is this molecule polar? If yes, consider which side of the molecule has partial negative charge and which - partial positive. Then, indicate the direction of the dipole moment relative to the molecule as shown. Non-polar, zero dipole moment. Polar. The dipole vector points along one of the C-Cl bonds. Polar. The dipole vector points along the vertical axis. parallel to the C-H bond. Polar. The dipole vector points along the horizontal axis. Polar. The dipole vector is perpendicular to the plane of the figure.

Select the bonds in the 3D representation of methyl urethane below that are multiple bonds. (Hint: Consider the number of bonds attached to an atom in the image compared to the normal valence of that atom. In a valid structure, the number of bonds to an atom will equal the valence of that atom.) • Gray = C: white = H; red = 0; blue = N; dark green = Cl; brown = Br; light green = F; purple = 1; yellow = S: orange = P. • Double click to select bonds. You can zoom in and out using the mouse scroll wheel (or pinch to zoom on touch screens). ●

Structural Isomers: In the next part you will learn a little about structural isomers and how to draw them. Structural isomers are compounds with the same molecular formula, but different bonding arrangements or connectivities. In other words, the atoms are connected in a different order. For example, there are 2 different compounds with the molecular formula C4H10. They are given below: H H-C- H -H H H HHH H- H H-C -H Η ΗΗ H H Do you see how the atoms are bonded in a different order in the 2 structures? So they are structural isomers. C3H12 Find three different molecular structures, isomers, with this formula. (Hint: Remember the C rule where every C atom needs to have 4 bonds.) C2H60 Find two different molecules with this formula. (Hint: What are the 2 ways you can C5H10 How many structural isomers can you find for this formula? (Hint: Notice that 2 H atoms have been removed. This means that there is EITHER 1 double bond OR there is a ring structure.) Try to provide at least 4…

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F3 Use the following Lewis diagram for propene to answer the questions: HI 11 2 3 Remember that geometry refers to the geometry defined by the atoms, not the electron pairs. The geometry about atom 1 is The geometry about atom 2 is The geometry about atom 3 is Submit Answer $ 4 R F F4 % H 5 Use the References to access important values if needed for this question. Retry Entire Group F5 T G Cengage Learning Cengage Technical Support ^ 6 MacBook Air F6 9 more group attempts remaining Y H & 7 U * 00 8 FB ( 9 K F9 0 P Previous Email Instructor F11

Acrylamide, H2 C=CHC(=0)NH2 , is a known neurotoxin and possible carcinogen. It was a shock to all consumers of potato chips and french fries a few years ago when it was found to occur in those products. H C -N -H C H a Identify all bond angles. O The bond angles around N are approximately 120°. All other angles are 109°. O The bond angles around N are approximately 90°. All other angles are 120°. O The bond angles around N are approximately 109°. All other angles are also 109°. O The bond angles around N are approximately 120°. All other angles are also 120°.

Determine the structures of the missing organic molecules in the following reaction: H+ 뿜 XI + H₂O H+ Y Z Note: Molecules that share the same letter have the exact same structure. In the drawing area below, draw the skeletal ("line") structures of the missing organic molecules X, Y, and Z. You may draw the structures in any arrangement that you like, so long as they aren't touching. Molecule X shows up in multiple steps, but you only have to draw its structure once. Click and drag to start drawing a structure. X Ś

= O PRINCIPLES OF ORGANIC CHEMISTRY Identifying rigid parts of an acyclic organic molecule In the actual molecule of which this is a Lewis structure, which of the labeled distances can change? marked 10 H O H B G1C F H A N E unmarked C O H List all the distances that can change. For example, suppose all the distances were measured at a certain time, and again 0.1s later. If distance A might be 50% bigger or smaller the second time, but all the other distances are certain to be the same, you should write "A". If A and B might be different the second time, but no other distances, you would write "A, B". And so on. Note for advanced students: you can assume the molecule is dissolved in an appropriate solvent at room temperature. 00.... X 90/5 You can click the "unmarked" tab to see the molecule without any of the distances marked. 5 Ja

Examine the highlighted bond in the structure below. Select all the pictures in the table that correctly show possible 3-dimensional arrangements of the atoms on both sides of the highlighted bond. If there are none, please check the box below the table that says: "None of the above." + H₂N H HI N H H H CH₂ CH, CH₂ H =CH₂ H H H H H FCH₂ CH₂ H CH3 CH3 H 7 HI N H C=CH₂ CH3 NH,=C=CH, X ola Ar

Molecular Models P Methane- CH4 Ethene- C2H4 Ethyne -C₂H2 Benzene C6H6 OR btw Ms Draw one view of these four molecules and indicate the bond angles. Upload a photo of your drawing below.

11 Understanding H atoms in a skeletal structure Suppose all the chlorine atoms in this molecule are replaced by hydrogen atoms: CI Draw a skeletal ("line") structure of the new molecule. Be sure you follow all the usual rules for drawing skeletal structures. Click and drag to start drawing a structure. O X 0: A

Using your general knowledge of periodic trends in electronegativity, predict whether the C=O bond and the C-H bonds in formaldehyde will be strongly polar, weakly polar or nonpolar.  Calculate the electronegativity difference ΔχO-C across the C=O bond and the electronegativity difference ΔχC-H to confirm or correct your predictions. For any strongly polar bond(s) on the molecule, draw the bond dipole moment adjacent to the bond in the VSEPR structure above, using crossed arrow notation to show the direction of the positive and negative bond dipoles.  Predict whether the overall molecule should be polar or nonpolar. ___________________ Explain your reasoning below. If the overall molecule is polar, draw the net dipole next to the molecule, using crossed arrow notation to indicate the direction of the dipole.

7. Label all the C=C double bonds as Z/E in the following compounds (if there is no Z/E isomer, mark as no isomer). Me Ме H H Н. Me. H H CI "Ме H. Br CI F. Br HO, CI OH

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I had gotten this one incorrect, but i wanted to use it to study, so please give me the solution to all parts of this question.

Using the principles of VSEPR theory, you can predict the geometry around any atom in any molecule, no matter how complex. Enanthotoxin is a poisonous compound isolated from a common variety of hemlock grown in England. Predict the geometry around the indicated atoms in enanthotoxin. Be sure to answer all parts. H HH:0: H H/H C-C-C-C-Cc C-H HOC C HHHH H H C-C C-C=c-C H. enanthotoxin a. (select) b. (select) C. (select) d. (select) e. (select)

Hi! These questions are answerable by NON-POLAR or POLAR.

Please only type ans.

The bond angles around all of the carbons in 2-methylbutane are the same because all ot the carbons in this molecule have the same "ABE" classification. Can you help me with part A and part B?

Can i get help please

7. Label all the C=C double bonds as Z/E in the following compounds (if there is no Z/E isomer, mark as no isomer). Me Me H H H. Ме TCI H CI Ме Br CI F. Br HO OH

Vanillin, the molecular structure above, is an interesting organic molecule. From the structure, answer the following questions and post them in the indicated submission box. What is the molecular formula of this compound? How many functional groups does this molecule have? Write the names of all the functional groups present in vanillin. Write the line-bond structures of all the functional groups present in vanillin. What orbitals are involved in forming the following bonds in vanillin? C=O O-CH3 C=C O-H

Sketch the hydrogen bond(s) that form between two molecules of ethanol and one nitrogen trihydride molecule and one dihydrogen monoxide molecule.   Show the proper VSEPR shapes of all molecules (meaning VSEPR shapes with proper bond angles) and used dotted or dashed lines to indicate the hydrogen bonds.  Indicate 4 different H-bonds:  1) ethanol and nitrogen trihydride 2) ethanol and dihydrogen monoxide 3) dihydrogen monoxide and nitrogen trihydride and then 4) between the two ethanol molecules.

7. Tropolone (A) is a molecule that easily loses a proton (H+) to form a relatively stable anion (B). In tropolone (A), the double and single bonds are clearly distinct from each other and their bond lengths very greatly (alternating long, short, long, etc.). However, in ion B, all of the carbon-carbon bonds are very similar. Explain. A OH +H- B

Given the following structural formulas, determine the molecular formulas and empirical formulas for each a) H-C C-H H. ннн b) C=C-C -C-H H H

Based on the TLC plate shown below, which lane contains the most non-polar compound? -1--+--|- 2 3 1 0 1 O 2 3

Nucleotides are molecules that make up the structures of RNA and DNA. Modify the compounds to create adenosine monophosphate (AMP).

The following structure is Vitamin C. Give the bond angle of the C4 - C5-03 bond in the structure below. Lone pair have not been shown. You may wish to add them. H H O 60 90 C₂ C3 109.5 O 120 180 <109.5 0=6 C₁ -02 8-8-1 H-5-8-1 H C4-C5-C6-04-H 03 H

PLEASE ANSWER QUESTION IN 15 MINTUES NOT MORE PLEASE AND THANK YOU. If you do answer the question correctly and post it in the next 15 minutes, NO NEED TO SHOW THE WORK, I JUST WOULD LIKE THE CORRECT ANSWER AS SOON AS POSSIBLE.

Some of these structural formulas are incorrect (i.e., they do not represent a real compound) because they have atoms with an incorrect number of bonds. Which structural formulas are incorrect? Which atoms in them have an incorrect number of bonds?