intermediate and most likely product for the reaction of each alkene below with H-X. H + H Cl + Cl Cl + + Br H Br H I Br + H I H + I H 2. Draw a complete mechanism of each pair of reactant including any favorable rearrangements and all important resonance structures of all intermediates. Reactant Pair 1 Cl H Br 1 + Cl No shift stable benzylic carbocation H: shift H H Br 2 3 Cl + Cl a. Which reaction has a lower PE carbocation intermediate? Reaction
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Safety of Sunscreen The sun’s rays have powered life on our planet since its creation‚ and have made life possible for all living things. The sun is one of the most important elements of the universe‚ but in recent years has only been condemned for some of its harmful effects on humans. Lately‚ all that is heard about the sun anymore is how can be harmful and how protection from overexposure is needed. Many people are scared of dangerous overexposure effects such as sunburn‚ premature aging of the
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Shakespearean era‚ the central values of Shakespeare’s King Richard III are steadily losing touch with the modern audience. Throughout Al Pacino’s modern remake of Looking for Richard‚ many modern cinematic techniques such as the specific use of colours‚ rearrangement of the original text as well as comparisons made in commentary are heavily included. It is through such cinematic techniques that the modern audience is able to comprehend not only the central values that were significant of that era but also understanding
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think about chronicled correctness. But rather I focused around the moderate moving plot line or the motion picture’s sensational enhancements. With such a lazy sympathy toward history‚ it is not hard to see how 1492: Conquest of Paradise’s over-rearrangements of history went unnoticed. It is this present exposition’s objective to analyze how the film depicts the Tainos and Columbus’ connection to one another‚ and hope to measure up these depictions to different authentic records to perceive how the
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department. 3. Situational Analysis The transportation department of the Creative Toys Company had become a social system- a complex set of human interrelationship interacting in many ways. All parts of the system are mutually interdependent. The rearrangement of the working areas affected each one of the members and it has lead to low productivity. The department gain closeness to each other especially that their working areas before are in a circular fashion thus they are able to converse with each
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predominately occur in the direction that results in the production of the more highly substituted carbon-carbon double bond. The carbocation has other fates depending upon substrate‚ reaction conditions‚ and acid employed. The carbocation can undergo rearrangement to a more stable species for example‚ 1°to a 2°‚ or 3°‚ via a
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The wild type and the mutant type strains of Halobacteria were used in this experiment to examine the phenotypic differences against each strain’s genotypes. The mutant strain (KBT-1) did not possess gas vesicles‚ which decreased its ability to float to the surface. The lack of gas vesicles in the mutant strain made the colonies a red color. The wild type strain (NRC-1) had gas vesicles and appeared a pink pigment color. Growth on the agar allowed one to examine the specific colonies. Inoculation
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Bacteria have to developed a variety of mechanisms that allow them to enter the cells of their host‚ whether to replicate or to transmit the pathogen. One method of this is through pili. Pili are thin rods anchored to the outer membrane of bacteria with an adhesin at the tip. This adhesin is what gives the bacteria their binding specificity. Pili can serve a variety of roles such as‚ adhesion or the transfer of material during bacterial conjugation. Fimbria are a type of pili that are solely for
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Chemistry of cosmetics Few people would whip out a chemistry set‚ uncork the vials‚ and slap the compounds on their face. Yet‚ millions of women and girls essentially do that every day when they unzip their makeup bags and apply lipstick‚ mascara‚ and other makeup. Like the compounds in a chemistry set‚ makeup consists of chemicals. Although the chemicals in cosmetic products are intended to improve the appearance of skin‚ lips‚ and lashes‚ some can cause adverse effects. Emulsions The majority
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feed. During early development‚ the sea urchin embryo undergoes 10 cycles of cell division‚ resulting in a single epithelial layer enveloping a blastocoel. The embryo must then begin gastrulation‚ a multipart process which involves the dramatic rearrangement and invagination of cells to produce the three germ layers. The first step of gastrulation is the epithelial-to-mesenchymal transition and ingression of primary mesenchyme cells into the blastocoel.[13] Primary mesenchyme cells‚ or PMCs‚ are located
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