Diffusion is a way nonvascular plants can get water. It is the movement of molecules from an area of higher concentration to an area of lower concentration until they are equal. An example of diffusion is red food coloring. When you put food coloring in a glass of water the color will spread through the water until all of it is a red tint. This shows the molecules of the food coloring equally distributed in the area of the water. Osmosis is a special type of diffusion where only the water molecules
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9.5 Tests for halogens and halide Ions Test for halogen Test method Test observations Test chemistry and comments Chlorine gas Cl2 A pungent green gas. (i) Apply damp blue litmus. (Can use red litmus and just see bleaching effect.) (ii) A drop silver nitrate on the end of a glass rod into the gas. (i) litmus turns red and then is bleached white. (ii) White precipitate. (i) Non-metal‚ is acid in aqueous solution and a powerful oxidising agent (ii) It forms a small amount of chloride ion in water
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EFFECTIVENESS AS MEASURED BY NCLEX-RN PASS RATES Title: DESIGN AND IMPLEMENTATION OF NURSING STUDENT CLINICAL EXPERIENCES AND PROGRAM EFFECTIVENESS AS MEASURED BY NCLEX-RN PASS RATES Author: Tanicala‚ Martha L. Description: This study examined the characteristics of design and implementation of student clinical learning experiences and program effectiveness in baccalaureate nursing education programs in Indiana‚ Michigan and Ohio as measured by NCLEX-RN pass rates. Questions were asked to elicit information
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Introduction The purpose of this experiment was to determine the rate law graphically from the rate of disappearance and the x y values also the specific rate constant (k). Activation energy was also determined‚ and the effect of catalyst was evaluated in the reaction between peroxodisulphate ion S2O82-‚ and iodide ion‚ I-. S2O82-(aq) + 3 I-(aq) --> 2 SO42-(aq) + I3(aq) The general expression for the rate law‚ given this overall reaction‚ is: rate of disappearance of S2O82- = k[S2O82-]m[I-]n Chemical
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PART I. MULTIPLE CHOICE QUESTIONS 1. When the value of the British pound changes from $1.50 to $1.25‚ then the pound has _________ and the dollar has _________. a. appreciated; appreciated b. depreciated; appreciated c. appreciated; depreciated d. depreciated; depreciated 2. When the exchange rate changes from 1.0 euros to the dollar to 0.8 euros to the dollar‚ then the euro has _________ and the dollar has _________. a. appreciated; appreciated
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The Environmental Lapse Rate Exercise A (Total = 12 marks) The heights of the temperature °c measurements are given in meters (m) Convert each of these to the appropriate height in Hectopascals (hPa): Height (m) Temperature°c Hectopacals (hPa) 0 22 1000 1500 18 850 3000 13 700 4000 7 600 5000 -15 500 6000 -22 400 7000 -36 300 8000 -41 200 8500 -49 150 9000 -58 100 a) Plot a simple graph to display these data (3 marks): see attached b) what does the graph tell you about
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keeps 12 steps in north direction and turns right to keep 5 steps. He then returns to the initial point by the shortest path. Find a) Distance travelled. b) Displacement. Given step is 0.4m. 10.A circular cycle track has a circumference of 308m (ABCDA) with AC as one of its diameter. A cyclist travels from A to D along the circular path. Find the distance moved by the cyclist and the displacement if AB is along west-east direction. B
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margin call? Problem 5.2. What is the difference between the forward price and the value of a forward contract? Problem 5.3. Suppose that you enter into a six-month forward contract on a non-dividend-paying stock when the stock price is $30 and the risk-free interest rate (with continuous compounding) is 12% per annum. What is the forward price? Problem 5.4. A stock index currently stands at 350. The risk-free interest rate is 8% per annum (with continuous compounding) and the dividend
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Determining Order from Rates of Reactions AP Chemistry Purpose The focus of this experiment is to recognize that when aqueous solutions of potassium iodate ion (KIO3-) and bisulfite ion (HSO3-) are mixed‚ a series of reactions will occur‚ and the final reaction is signaled by the appearance of a dark blue color. My partners and I investigate how the concentration of the reactants affects the rate of reaction. The purpose of this lab is to find
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Changing the Rate of Reaction PART 1: PARTICLE SIZE Question: How does changing the particle size of marble (CaCO3) affect the rate of reaction when it is added to hydrochloric acid (HCl)? Hypothesis: If I change the particle size of marble to test how to change the rate of a chemical reaction‚ than the chemical reaction with the smallest marble particles will produce CO2 the quickest because the larger the surface area‚ the more place the hydrochloric acid will have to collide with the marble
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