Quick Glance

A quick glance at the products indicates that we are adding H and OH across the alkene. Let s take a closer look and carefully analyze the regiochemistry and stereochemistry of this reaction. The OH is ending up on the less substituted carbon, and therefore, the regiochemistry represents an anti-Markovnikov addition. But what about the stereochemistry Are we seeing a syn addition here, or is this anti addition ... 

This quick glance at the acid-base properties of some (poly)azamacro-cycles already suggests which parameters will determine the p a of macrocyclic and related acids and bases. Hydrogen bonds will probably be very important and in polyions Coulomb interactions have to be taken into consideration. But the geometry of the acid-base function has to be defined. In Sections 2, 3 and 4 we shall therefore focus on compounds with intra-annular acid-base functionalities (the 1,3-xylyl trick). 

A quick glance at Equations (1) through (5) shows sources of error that contribute to error in age, presuming that the assumptions used in calculating the equations hold (initial condition assumptions and the closed-system assumption). These include errors in the decay constants/half-lives, errors in the measurement of the pertinent isotope ratios, and in the case of Equation (3), the error in our estimate of initial °Th/ Th. Relationships among error in half-lives, laboratory standardization procedures, and °Th age are discussed in detail by Cheng et al. (2000b). 

Extracts of significant results from the calculations are stored in the analysis database. These results are adequate for a quick glance at the analytical results. The raw data can be downloaded to an offline computer if further reduction is desired. 

We will note how the shadow is in a state of continual movement. The patterns are caused by eddy currents around the heater as the air warms and then rises. After just a quick glance, it s clear that the movement of the warmed air is essentially random. By extension, we see that, as an electroanalytical tool, electrode heating is not a good form of convection, because of this randomness. Conversely, a hydrodynamic electrode gives a more precisely controlled flow of solution. In consequence, the rate of mass transport is both reproducible and predictable. 

A quick glance at Fig. 5 illustrates the fallacy of this appraoch. Both 12 and phenol cannot give linear, enthalpy plots with SbCls unless they give linear plots with each other. The apparent success in... 

These four components may appear trivial by themselves, but combining them results in a dynamic method to create a QSAR model. Unfortunately, these main components of CoMFA are more complicated than a quick glance might suggest. 

A quick glance at Figure 1 will help to establish where we are in the product life cycle. 

For at least some of these latter reasons, the federal courts have at least espoused a reluctance for too easily finding inequitable conduct, but a quick glance at some of... 

At a quick glance, the curves portrayed in Figure 5.2 are appealing as a convenient distinction among tourist settings. A more exacting analysis,... 

The next day, I am in my office sitting restlessly in front of my computer, fielding too many questions over e-mail. I feel overworked and short on time. A quick glance at the clock tells me that I am late again for swim practice so I grab my bag, skip downstairs, step outside, jump on my bike, and pedal to the pool. Usually swimming in the middle of the day alters my state of mind dramatically. 

Answer Again, notice the single element as a reactant and a solution of an ionic compound as the other reactant. These are clues for a replacement. You should check to make sure that magnesium is capable of replacing silver in solution. A quick glance at the reduction potentials indicates that it will easily replace silver, so the reaction should be completed ... 

Data should be reported with a description of their quality. For example, the temperature of a spring measured by one person five times in succession was 16.5, 17.2, 14.0, 15.7, and 16.9° C. The same spring measured by a second person five times in succession yielded 16.0, 16.1, 15.8, 16.1, and 16.4° C. A quick glance reveals that the second person s measurements are closer to each other, or to use a more technical expression, the second set of data reveals a higher degree of reproducibility. This degree of reproducibility may be expressed quantitatively by calculating the mean deviation for the sets of data. The mean value in the first set of temperature measurements is 16.1° C and the mean deviation is + 1.0°C. Hence, the mean value of the first set of measurements is 16.1° C + 1.0° C. The mean value of the second set of measurements is 16.1° C + 0.2° C. Hence, the reproducibility in the... 

Answer 5.6 (a) A quick glance reveals that the value of 202.02mg/1 is... 

A quick glance at the p.JCas of some substituted benzoic acids will show how well they correlate electron donation with pKa. The substituents at the top of the table are electron-donating and the anions of the benzoic acids are correspondingly less stable so these are the weakest acids. At the bottom of the table we have the electron-withdrawing groups, which stabilize the anion and... 

A quick glance into a standard work of Holocaust literature reveals that the certain Herr Eirert-schmalz was Chief of the Office C-4 (Finances ) in Group C (Construction) of the WVHA... 

A quick glance at eqs. 30 and 31 should convince most of us that experimental observations of the triplet Overhauser CIDNP... 

A quick glance down Table VI shows that in most cases the p band lies under the envelope with the a band. This appears most consistently with 7-azaindole, which can form an H-bonded complex as shown in 178. To confirm the presence of a p band, its spectrum was determined in heptane, and fine structure similar to that seen with indole in inert solvents is apparent. The same could be expected for 4-azaindole, but it, as well as the other two isomers, is not soluble in heptane or cyclohexane. It has been pointed out that the spectra in dichloromethane show little improvement over that in water. 

Another of Poincare s new methods was the reduction of the continuous phase-space flow of a classical dynamical system to a discrete mapping. This is certainly one of the most useful techniques ever introduced into the theory of dynamical systems. Modem journals on nonlinear dynamics abound with graphical representations of Poincare mappings. A quick glance into any one of these journals will attest to this fact. Because of the usefulness and the formal simplicity of mappings, this topic is introduced and discussed in Section 2.2. 

For several days I explained to the laboratory crew of soldiers and civilians how we measured gas concentrations by electrical resistance in a water solution, and they planned to set up such a system. Each Saturday morning the laboratory staff stopped their work, dismantled their apparatus, cleared everything off the laboratory benches, washed and dried the table tops, and swept the room. The commanding officer carried out his weekly inspection. He walked into the room accompanied by two junior officers, quickly glanced around the room, wiped a finger over the top of the laboratory bench, noted that his finger was clean, and marched out of the room. 

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