First check

Before accepting this answer, we first check our assumptions. Using the Ksp equation we calculate the [Ag+] to be... 

The hazards checklist usually has three columns next to each item on the Hst. Items can number in the hundreds or even the thousands. The first check is marked if the issue has been considered and complete. The second check is marked if additional consideration or work is required, and the last check is marked if the item does not apply. An example of a detailed checklist can be found in the Hterature (2). 

Pivaloyl chloride (trimethylacetyl chloride) [3282-30-2] M 120.6, b 57.6"/150mm, 70.5-71/250mm, 104"/754mm, 104-105"/atm, 105-108"/atm, d 1.003, n p 1.4142. First check the IR to see if OH hands are present. If absent, or present in small amounts, then redistil under moderate vac. If present in large amounts then treat with oxalyl chloride or thionyl chloride and reflux for 2-3h, evap and distil residue. Strongly LACHRYMATORY - work in a fumecupboard. Store in sealed ampoules under N2. [Traynham and Battiste J Org Chem 22 1551 1957, Grignard reactns Whitmore et al. J Am Chem Soc 63 647 1941.]... 

To test the model, first check against experimental values within the design. Second, check against rates not involved in the design. Third, predict rates and execute experiments to check the results. 

An improvement of this method—the so-called biased sampling [55] (or inversely restrieted sampling)—suggests to look ahead at least one step in order to overcome the attrition. Consider a SAW of i steps on a -coordination number lattice. To add the / + 1st step one first checks which of the = q — neighboring sites are empty. If k qQ > k>0) sites are empty one takes one of these with equal probability 1 /A if A = 0 the walk is terminated and one starts from the beginning. This reduces the attrition dramatically. Now each A-step walk has a probability PAr( i ) = Ylf=i so that dense configurations are clearly more probable. To compensate for this bias, each chain does not count as 1 in the sample but with a weight... 

Jnny Davis, age 25, is pregnant. Jenny s primary health care provider tells her that she may not take any medication without first checking with the health care provider during the pregnancy. Jnny is puzzled and questions you about this. Discuss how you would address Jnny s concerns. 

Do not discontinue use of this drug without first checking with the primary care provider (unless instructed to do otiierwise). Do not miss a dose or take an extra dose. 

Do not take antacids, tetracyclines, penicillamine, or fluoroquinolones at the same time or 2 hours before or after taking iron without first checking with the primaiy health care provider. 

First check to see whether the compounds are ionic or molecular. Many compounds that contain a metal are ionic. Write the symbol of the metal first, followed by the symbol of the nonmetal. The charges on the ions are determined as shown in Examples C.l and C.2. Subscripts are chosen to balance charges. Compounds of two nonmetals are normally molecular. Write their formulas by listing the symbols of the elements in the same order as in the name, with subscripts corresponding to the Greek prefixes used. 

To optimize the electron distributions about inner atoms, we first check to see if any inner atom lacks an octet. Examine the provisional stmctures of PCI3, BF4, and (CH3 01X2)2 NXI. All the inner atoms have octets in these stmctures, indicating that the provisional stmctures are the optimum Lewis stmctures. No optimization is required for these three examples. 

This is above the initial estimate of 300 W/m2oC. The number of tubes could possibly be reduced, but first check the pressure drops. 

Step up if needed (first check adherence and environmental control and comorbid conditions)... 

In real life data is usually not fully correct. Therefore - before any optimization will be successful - a thorough check of the input data is necessary. The first check of data correctness can be done within approximately 2 min. This step has to be done by the user at least one time and then until the predefined checks show no errors any more. 

Find equations for xlf jc2, and x3 in terms of zl9 z2, z3. Use an algebraic method first check the result using A-1. 

The choice of a given database as source of auxiliary values may not be straightforward, even for a thermochemist. Consistency is a very important criterion, but factors such as the publication year, the assignment of an uncertainty to each value, and even the scientific reputation of the authors or the origin of the database matter. For instance, it would not be sensible to use the old NBS Circular 500 [22] when the NBS Tables of Chemical Thermodynamic Properties [17], published in 1982, is available. If we need a value for the standard enthalpy of formation of an organic compound, such as ethanol, we will probably prefer Pedley s Thermodynamic Data and Structures of Organic Compounds [15], published in 1994, which reports the error bars. Finally, if we are looking for the standard enthalpy of formation of any particular substance, we should first check whether it is included in CODATA Key Values for Thermodynamics [16] or in the very recent Active Thermochemical Tables [23,24],... 

First check that the chemical equation is balanced. Then use the molar coefficients in the balanced equation to determine the relative rates of disappearance and formation. 

First, check your assumption that x is negligible compared with the initial concentrations. Your assumption is valid because, using the rules for subtracting measured quantities, 0.038 - (5.8 x 10 ) = 0.038. Next, check the equilibrium values ... 

First check for any restrictions on growing currants in your area (they can harbor a disease fatal to pine trees). Plants are usually sold container-grown as one-, two-, or three-year-old plants to train them against a wall, start with one-year-old plants. For bushes, look for plants with a good, fibrous root system, a short single stem, and three or more young branches of about pencil-thickness at the base. 

How can good pharmacotherapists be found First, check with experienced and respected colleagues, take note of which pharmacotherapists are referring patients to you, attend local educational meetings with psychiatrists, or, if there is a medical school nearby, attend the psychiatry department s grand rounds. Local patient advocacy and support groups, such as the Depression and Bipolar Support Alliance (DBSA), the National Alliance for the Mentally HI (NAMI), the American Foundation for Suicide Prevention (AFSP), and the Anxiety Disorders Association of America (ADAA), are valuable sources of information from the patient s perspective. 

The first check is to see whether the information presented is self-consistent and that all the dye injected has flowed out of the system. Problems in carrying out this check may be expected because, from the tabulated data, it is evident that the tracer response has a long tail which is still present to a small extent after 20 min, after which time no more data are available. From mass balance considerations... 

One may first check qualitatively whether the desired reaction has taken place, especially by means of solubility tests and NMR or IR spectroscopy it is also necessary to examine whether unreacted groups, or groups other than those desired, are present. Quantitative analysis is aimed at evaluating the proportions of A, C, and D in Eq. 5.2, for which one may employ not only the usual methods of determination, but also special procedures, such as spectroscopy and pyrolysis gas chromatography. It is also sometimes expedient to choose the low-molecular-weight reactant so that an easily determinable element is introduced (e.g., by using chloroacetic acid for esterifications). 

Any reboiler is calculated in the subroutine written specifically for this purpose. The subroutine first checks the variable flfees which is the total mass input to the reboiler. If flfees is zero, the exit streams from the reboiler are set to zero, it is noted that the problem has been altered, and the calculation returns to the basic program. 

Do not take any other medications without first checking with me. These medications include over-the-counter medicines bought without prescription, such as cold tablets, nose drops, cough medicine, and diet pills. 

In most practical uses of polymeric particles, their surfaces play a very important role by taking part in interfacial interactions such as recognition, adsorption, catalytic reactions, etc. When we want to use polymer particles, we first check whether the chemical and physical structures of the surfaces meet the purpose. If some of them do not satisfy the criteria, we may seek other particles or try to modify the existing particles. This chapter mainly deals with the modification of surface of existing particles. In addition to chemical modification of particle surfaces, modification of the morphology of particles is also described. 

Never acts without first checking out whether they are likely to meet with approval (a need to be liked or a need to be dependent). 

Before applying any model, we should first check if the assumptions of the model are satisfied by the experimental conditions. If not, the model results are questionable. 

Here, Vo is the potential energy, which, however, does not affect the RFR term. This method is first checked for its self-consistency using a real-valued potential... 

Proof. We must first check that 4> and / satisfy the hypotheses of Propo-... 

We first examine the final state of the reaction, i.e. the chemical equilibrium composition. This is not of great relevance to oscillatory behaviour but is an important first check that the model is chemically reasonable . Equilibrium arises when all three rates of change become zero simultaneously. Equations (2.1)—(2.3) have a unique point satisfying this condition, as required chemically, given by... 

We have considered above the predictions of the general theory of the swelling and collapse of charged networks which contain both positive and negative charges. These predictions were first checked in Ref. [15]. The objects of the investigation were the copolymers of AA with SMA and 2-methyl-5-vinyl-pyridine, quatemized by dimethyl sulfate (MVPQ), crosslinked with BAA. The solvents were mixtures of water with ethanol. 

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