The genetic code is based on four different bases with the struc-tures shown here. Assign a geometry to each interior atom in thesefour bases.a. cytosineb. adeninec. thymined. guanineNH2H8CHHC,HNH2a.b.HHC6HNÍ8CHNHH;C"H,N'Hd.

The geometry of an atom in a molecule can be identified by the hybridization of the atom. If atom…

Answered: The genetic code is based on four…

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter3: Electron Orbitals

Section: Chapter Questions

Problem 11CTQ: On the left side of Figure 3.6, label the areas shown with a dotted line where... one bond can...

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A paper published in the research Journal Science in 2007 (S. Vallina and R. Simo, Science, Vol. 315, p. 506, January 26, 2007) reported studies of dimethylsulfide (DMS), an important green-house gas that is released by marine phytoplankton. This gas represents the largest natural source of atmospheric sulfur and a major precursor of hygroscopic (i.e., cloud-forming) particles in clean air over the remote oceans, thereby acting to reduce the amount of solar radiation that crosses the atmosphere and is absorbed by the ocean. (a) Sketch the Lewis structure of dimethylsulfide, CH3SCH3, and list the bond angles in the molecule. (b) Use electronegativities to decide where the positive and negative charges lie in the molecule. Is the molecule polar? (c) The mean seawater concentration of DMS in the ocean in the region between 15 north latitude and 15 south latitude is 2.7 nM (nanomolar). How many molecules of DMS are present in 1.0 m3 of seawater?
For each of the following molecules, complete the Lewis structure and use the VSEPR model to determine the bond angles around each central atom. Note that the drawings are only skeleton structures and may depict the angles incorrectly.
Consider the following flat drawing of methane (CH4) . a. What is HCH bond angle implied by this drawing if you assume it is flat? b. Are the electron domains of this flat CH4 spread out as much as possible? c. Use model materials to make a model of CH4 (methane). If you assembled it correctly, thefour bonds (bonding electron domains) of your model will be 109.5° apart. d. In which representation, the drawing above or the model in your hand (circle one) are theH’s of CH4 more spread out around the central carbon? e. Confirm that your model looks like the following drawing. The wedgebond represents a bond coming out of the page, and the dash bondrepresents a bond going into the page f. You will often see methane drawn as if it were flat (like on the previous page). Why is thismisleading, and what is left to the viewer’s imagination when looking at such a drawing?
Lets look more closely at the process of hybridization. (a) What is the relationship between the number of hybrid orbitals produced and the number of atomic orbitals used to create them? (b) Do hybrid atomic orbitals form between different p orbitals without involving 5 orbitals? (c) What is the relationship between the energy of hybrid atomic orbitals and the atomic orbitals from which they are formed?
On the left side of Figure 3.6, label the areas shown with a dotted line where... one bond can form. one bond can form.
Identify the molecules with a dipole moment: (a) SF4 (b) CF4 (c) Cl2CCBr2 (d) CH3Cl (e) H2CO
Atom A has 4 valence electrons. Atom Z has 6 valence electrons. For the AZ3-2 ion How many valence electrons are in the structure? b. How many single bonds are in the structure? c. How many double bonds are in the structure? d. How many triple bonds are in the structure? e. How many lone pairs are on the central atom in the structure? f. What is the shape of the structure? g. What are the bond angles of this ion?
Which ones are polar and which ones are non polar?
What is the structure of an acetyl functional group? What is the electron domain geometry and molecular geometry of an acetyl functional group? What is the hybridization of atoms in the acetyl group? Is the acetyl functional group polar or nonpolar? Does the group add water solubility to a molecule?
- What orbital(s) are the lone pairs of electrons on the O atom placed? - What orbital is the lone pair of electrons on the N atom placed? - What type of bond(s) are formed between Ca1 – C? - What type of bond(s) are formed between C = O? - What type of bond(s) are formed between C – N? - What type of bond(s) are formed between N – Ca2? - What type of bond(s) are formed between N – H? - What is the angle between Ca1 – C = O? - What is the angle between Ca1 – C – N? - What is the angle between O = C – N? - What is the angle between C – N – Ca2?
What is the molecular geometry of SOCl2?
In the spaces provided below, use Lewis structures to show each entire chemical reaction between the two given reactants. Then, indicate the hybridization of each central atom. Do not name the products

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The genetic code is based on four different bases with the struc- tures shown here. Assign a geometry to each interior atom in these four bases. a. cytosine b. adenine c. thymine d. guanine NH2 H 8CH HC, H NH2 a. b. H HC6 HNÍ 8CH NH H;C" H,N' H d.