ΔT1 = Kfm where Kf is a constant that depends on the specific solvent and m is the molality of the molecules or ions solute. Table 1 gives data for several common solvents. Table 1. Molal Freezing Point and Boiling Point Constants | Solvent | Formula | Freezing Point (°C) | Kf(°C/molal) | Boiling Point (°C) | Kb(°C/molal) | Water | H2O | 0.0 | 1.86 | 100.0 | 0.51 | Acetic acid | CH3COOH | 17.0 | 3.90 | 118.1 | 3.07 | Benzene | C6H6 | 5.5 | 4.90 | 80.2 | 2.53 | Chloroform | CHCl3 | –63
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What type of media is KF streptococcal and what is the mode of action (i.e. what are the principle ingredients and how exactly does it work). KF streptococcal is selective media because it contains chemicals that would suppress the growth of the undesirable bacteria (Lee et al.‚ 1981). The media contain partially digested proteins which
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Abstract This paper will discuss the design of an FM receiver. It will begin with a brief historical backdrop of FM broadcasting and its use in society. It will continue by providing the necessary mathematical background of the modulation process. Furthermore‚ it will enumerate some of the advantages of FM over other forms of modulation‚ namely AM. Finally‚ the paper will discuss the design of a basic FM receiver as well as introduce some circuits and circuit components which the reader may
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NIKE‚ INC.: COST OF CAPITAL Book value vs. Market value While calculating the Nike’s cost of capital using both the book value (Exhibit 1.1) and the market value (Exhibit 1.2)‚ I could notice the mistake Cohen made finding the equity value. Cohen used the book value to reflect equity value. Although the book value is an accepted measure to estimate the debt value‚ the equity’s book value is an inaccurate measure of the value perceived by the shareholders. Since Nike is a publicly traded company
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Fermi wave number kF works as a magnetic shield where the field produced by a magnetic object placed above graphene is always screened by a constant factor on the other side of graphene. The object is repelled by a diamagnetic force from the graphene‚ as if there exists its mirror image with a reduced amplitude on the other side of graphene. The magnitude of the force is much greater than that of conventional two-dimensional system. The effect disappears with the increase of kF . Graphene‚ an
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ABSTRACT The experiment deals with determining the standard reduction potentials of different electrochemical half-cells through pairing it with Cu2+(0.1 M)|Cu half-cell and then comparing it with the theoretical value. Galvanic or voltaic cells contain the anodic and cathodic cell reactions‚ and in order to get the value of Ecell‚ we add both half-reactions. The more positive the Ecell‚the more negative ΔG would be‚ thus‚ giving us a spontaneous reaction. After comparing the cell potentials
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chapter 10 Student: ___________________________________________________________________________ 1. Antidiuretic hormone is released by: A.anterior lobe of the pituitary B.posterior lobe of the pituitary C.hypothalamus D.adrenal glands 2. Excretion primarily rids the body of: A.excess fuels B.undigested food C.minerals D.substances that were involved in metabolism E.All of the choices are correct. 3. Benign prostatic hyperplasia: A.is prostate cancer B.involves enlargement
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Experiment 3: Cryoscopic Determination of Molecular Weight Aim: The primary objective of the experiment is to calculate the total molecular mass of the compound benzoic acid in a predetermined amount of cyclohexane. Introduction: One of the key concepts in this experiment is the term freezing point depression. The definition of this phrase is that when a solute is dissolved into a solvent‚ their collective boiling point will be less than that of the original boiling point of the solvent. This incidentally
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CHAPTER – 4 THREE PARAMETER FRACTURE CRITERION 4.1 MODIFIED TWO-PARAMETER FRACTURE CRITERION K max = K F �(1 − m) � The two – parameter fracture criterion as per Newman is‚ σf �� σu (4.1) Here KF and m are two fracture parameters evaluated from base line test data. σf is the failure stress normal to the direction of the crack in a body σu is the nominal stress required to produce a plastic hinge on the net section. The modified two-parameter fracture criterion is an empirical relation developed
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force equals the change in kinetic energy of the object: Wnet = Kf - Ki This relationship is called the work energy theorem W = Fdcosø When the energy of the body increases‚ work is positive. Examples: 1. A boy pushes a 5.00 kg cart in a circle‚ starting at 0.500 m/s and accelerating to 3.00 m/s. How much work was done on the cart? Answer: W= Kf- Ki = (0.5)m(vfinal)2 - (0.5)m(vinitial)2 W = (0.5)(5.00)(3.00)2 - (0.5)(5.00)(0.500)2
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