Elemental Exposure-General Truisms Childhood Lead Poisoning Why you might be smarter than your parents • Most are not toxic • Nutritional = less toxic (Zn‚ Cd) Noel Stanton WI State Lab of Hygiene 2601 Agriculture Drive PO Box 7996 Madison WI 53707 (608) 224-6251 nvstox@mail.slh.wisc.edu – Homeostasis • Abundance = toxicity • Every truism has exceptions Speciation Considerations • Can greatly influence toxicity • Ability to differentiate limited‚ improving – Cr+3
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pressure and 8 bars. The experimental slope (dT/dP)SAT obtained is compared to the theoretical value determined through calculation from the steam table. Clausius-Clapeyron states: (dT/dP)sat = Tvfg/ hfg (dT/dP)sat = T(vf – vg)/hf -hg Where‚ hf +hfg = hg hfg = hg - hf (dT/dP)sat = T(vf -
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figure. w=9.80 kN/m3 3) An air-filled‚ hemispherical shell is attached to the ocean floor at a depth of 10 m as shown in the figure. A mercury barometer located inside the shell reads 765 mm Hg‚ and a mercury U-tube manometer designed to give the outside water pressure indicates a differential reading of 735 mm Hg as illustrated. Based on these data what is the atmospheric pressure at the ocean surface. mercury=133 kN/m3‚ sea water=10.1 kN/m3 4) A partitioned tank as shown contains water and mercury
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Preparation u Alcohols when heated in presence of H2SO4‚ H3PO4‚ P2O5‚ Al2O3 or BF3 undergo loss of water molecule with the formation of alkene. Conc. H2SO4 180oC H3PO4/P2O5 200oC Al2O3/BF3 350oC CH3-CH=CH2 + H2O CH3-CH2-CH2-OH CH3-CH=CH2 + H2O CH3-CH=CH2 + H2O u u Mechanism: In the first step OH group of the alcohol is protonated in a fast reversible reaction. Unlike OH group‚ protonated OH group is a good leaving group. Step 1: CH3 CH3-C-CH3 + H+ HO CH3 CH3-C-CH3 H2O+
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I. Abstract: By manipulating the ideal gas law (PV=nRT)‚ we will be determining the molar mass of an unknown volatile liquid. Heating a flask filled with an unknown‚ easily evaporated liquid will allow for measurements that can be taken to work out the ideal gas equation. This lab will require knowledge of basic equations used in chemistry. Using these equations‚ such as density and number of moles(n)‚ we can substitute different values into the ideal gas law to manipulate it.
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22 Respiratory System The Respiratory System Respiratory System Consists of the respiratory and conducting zones Respiratory zone: Site of gas exchange Consists of bronchioles‚ alveolar ducts‚ and alveoli Respiratory System Conducting zone: Conduits for air to reach the sites of gas exchange Includes all other respiratory structures (e.g.‚ nose‚ nasal cavity‚ pharynx‚ trachea) Respiratory muscles – diaphragm and other muscles that promote ventilation Major Functions of the Respiratory
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moles) (b) Determine the partial pressure of Krypton. [Sep 2014] (0.2 atm) 5. Calculate the number of moles of sulfur dioxide gas‚ SO2‚ transported in a 2 L container at s.t.p. (0.089 mole) 6. Water has a vapour pressure of 24 mm Hg at 25 °C and 182 mm Hg at 67 °C. Calculate the heat of vaporization. [Sep 2011] (40.685 kJ mole-1)
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The objective : 1. To determine the head loss and friction factor for laminar & turbulent flow in a smooth pipe over a range of Reynolds’s number . 2. To obtain the following relationships : a. Head loss as a function of the velocity of flow . b. Friction factor as a function of Reynolds number . Theory : The friction resistance to the flow of fluid through a pipe results in a loss of pressure energy for a given fluid flowing a long a given pipe‚ experiments show that for laminar flow
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CV 1 Topical Organization of the Cardiovascular Lectures 1. 2. 3. Function & Anatomy Heart & Vascular System – Chapter 9 Cardiac Electrophysiology – Chapter 9 Hemodynamics – Static & Dynamic Hemodynamic Properties – Chapter 10 Cardiac Mechanics – Chapter 9 Cardiac Output – Chapter 9 Peripheral Vascular System – Chapter 10 Regulation of Blood Pressure – Chapter 10 4. 5. 6. 7. June 19‚ 2013 1 CV 2 Topic #1: Functions & Anatomy of the CV System Chapter 9 Functions 1. Delivery
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