Barry Bonds

 Comment: The three bonds (one solid line, one wedged line and one dashed line) that are attached to the + carbon atom are turned inside out. If the starting material has Br on the right side of the + carbon atom, the final product will have OH on the left side of the + carbon atom and vice versa.  Comment: There is only one hump for the energy profile of an SN2 reaction. As we shall see later, there are two humps for the energy profile of an SN1 reaction. One easy way to…

allows for the relation between the nature of chemical bonds and the properties of molecules.1 Many times, the frontier molecular orbitals, named HOMO and LUMO, are analyzed in order to predict these properties. In this lab, each double bond corresponds to a molecular orbital. The HOMO, or highest occupied molecular orbital is the most energetic (highest n-value) orbital that contains an electron. The n-value is equal to the number of double bonds present. The orbital that corresponds to the…

The article talks about poor cities in Brazil, Shantytown called “alto do Gruzeiro” (Crucifix Hill), and Bom Jesus de mata. There is a bell that rings each time an infant or a baby dies. Most of these kids die unnamed and during birth but the fortunate babies who do survive will mostly last two or three months. Alto do Gruzeior is one of the three counties in shantytown that has the poorest representation of the third world countries, shantytown has mostly farms, ranches, sugar plantations and…

All four articles focus weigh the benefits and criticisms of breast feeding in contrast to formula feeding infants. Unsurprisingly the results are very similar in each article and the authors all seem to have the same belief that with all the known advantages of breastfeeding, it should be the obvious choice. The study done in 2007 in the UK shown in, “Healthcare Professionals and Mother’s Perceptions of Factors that Influence Decisions to Breastfeed or Formula Feed: A Comparative Study”…

very important, because for most biological reactions to occur, the reactants must be dissolved in water. The hydrogen bond is a weak bond that often forms between the hydrogen atoms and neighbouring atoms. Hydrogen bonds are very common in living organisms, such as between the bases of DNA are formed by hydrogen bonds to help hold of the DNA chain structure together. Hydrogen bonds also give water molecules two additional characteristics, which are cohesion and surface tension. These two…

1.3. AMORPHOUS STATE The amorphous state of solids is composed of molecules that have a disordered arrangement, which do not constitute to the characteristic of the crystal grid and, therefore, have zero crystallinity. The distribution of molecules in the solid amorphous form is not entirely random as it is specific to a gaseous state because it has a certain degree of order between neighboring molecules. Due to the lack of regulation and the absence of a crystal grid, compared to the crystal…

he did have a speech impediment. After every last sentence he said he seemed to struggle to finish it. His occupation was a fishermen. Criminal Investigators were looking for someone was skilled in butchering. When Kelly was being examined by Thomas Bond, he suggested that the police to look for a quiet, inoffensive looking man who’s middle aged (Zeigler). In addition, Since Kelly was a prostitute, it made it easier for Barnett to kill her because prostitutes tend to avoid the law. Once they get…

Comparison of Organometallic Compounds of Transition Metals and Main Group Elements Organometallic Compounds: The compounds which contain at least one direct metal to carbon covalent bond are known as organometallic compounds many of these are thermodynamically unstable and are pyrophoric. The meta may belongs to main group, transition metal, f group metal or a metalloid i.e. selenium, boron, arsenic, silicon, antimony, germanium, and tellurium and the carbon moiety may be alkyl, alkene, alkyne,…

lewis structures for compounds are a great way of visualizing how the elements bond together. To draw a lewis structure, first determine the number of valence electrons. Valence electrons are the number of electrons in an element’s outer most shell. After finding the number of valence electrons, you are…

There is a common practice to place twins in separate classes. Some schools even make a policy to separate twins even if the parents disagree. Jamison J Grime noted, “The policies of the principals... were formed from misconceived stereotypes that twins need to be separated in order to form an individual personality” (92). Stereotypes often lead to hurtful, if not damaging behavior. In the case of separation of twins in classrooms, the policies could cause lasting damage to twins. In a poll on…