SCH4U7-02 Monday‚ October 21‚ 2013 Designing an Experiment to Investigate Factors Affecting Rate of Reaction Introduction Hydrogen Peroxide (H2O2)‚ is the most simple peroxide and commonly used in several household items such as toothpaste or as an alternative to bleach. However hydrogen peroxide it is a very dangerous substance when accumulated in large amounts. If that situation occurs this substance must be decomposed. But how can we decompose this reaction? Well it decomposes by itself
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Divorce Divorce rates in the United States have increased dramatically in the past 25 years. Over 40 percent of the marriages among young Americans will end in divorce. There is a lot of stress on all the people involved. The man has to deal with‚ usually‚ not seeing his children‚ being alone‚ and the responsibility that is accompanied with much of the legal process. The wife has to go through‚ maybe‚ entering the work force for the first time. Children are often viewed as a back burner
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1 Part A (15 marks) Select the one best answer choice for each question. Question 1: A stock just paid its annual dividend of $9. The share price is $60. The required return of the stock is 10% pa as an effective annual rate. What is the implied growth rate of the dividend? (a) -0.8565 (b) -0.0500 (c) -0.0435 (d) 0.0000 (e) 0.1500 Question 2: A stock is expected to pay a dividend of $15 in one year (t=1)‚ then $25 for 9 years after that (payments at t=2 ‚3‚...10)‚ and on the 11th year
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The United States dropout rate is dropping about an estimated 1.1 million members in 2012. 1.1 million people will not be earning diplomas in high school in 2012. Dropout compared to high school dropouts are least likely to get a job and a living wage. Dropouts will most likely be poor and can suffer from health outcomes in the future (Rumberger). Teens have a variety of reasons for leaving school‚ including family and health problems. Dropouts that have family poverty is associated with homelessness
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1) A $100 deposit today that earns an annual interest rate of 10% is worth how much at the end of two years? Assume all interest received at the end of the first year is reinvested the second year. 2) An investment of $100 today is worth $116.64 at the end of two years if it earns an annual interest rate of 8%. How much interest is earned in the first year and how much in the second year of this investment? 3) Which of the following investments has a larger future value? A $100 investment
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on cardiovascular functions such as pulse rate‚ pulse lag‚ the PT interval‚ the TP interval‚ systolic‚ and diastolic blood pressure is noticeable after running down the steps of Long Hall and back up to the third floor. As Table 1 shows‚ the data support the initial hypothesis that the pulse rate will increase‚ the pulse lag will decrease‚ both the PT and TP intervals will decrease‚ and the systolic and diastolic blood pressure will increase. The pulse rate mean before exercise was about 78 beats per
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The topic is The Effect of Temperature on the Rate of Dissolving. In this experiment‚ the scientist will research how the temperature of water will affect the rate of dissolving of different chemical solutes. The independent variable in this experiment are the different types of solutes used and the different temperatures the solvent will be adjusted to‚ and the dependent variable is the amount of weight of the solvent after the solute has dissolved in it. The constants are the same cups used to
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WHAT INFLUENCES ONLINE CLASSES HIGH ATTRITION RATE by Lora Hines Bachelor of Science in Business Education December 1984 College of Education A Research Paper Submitted in Partial Fulfillment of the Requirements for the Master of Science in Education Degree Department of Workforce Education and Development In the Graduate School Southern Illinois University – Carbondale December 1‚ 2011 TABLE OF CONTENTS Chapter Page
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6.05 Rate and Collision Theory Does surface area affect dissolving of Alka-Seltzer tablets? Materials: 1. solo cups 2. Alka-Seltzer tablets 3. Timer 4. Measuring Cup 5. Thermometer Procedures: 1. I placed out two of my solo cups on the counter 2. Then I put 1 cup of room temperature water into each cup. 3. Then put one Alka-Seltzer Tablet in one cup and time it until it dissolves completely. 4. In the second cup I put in a crushed up Alka- Seltzer tablet and timed it until it
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Description To investigate the effect on caffeine on heart rate of water fleas and to understand the risk of high level consumption of caffeine to the health of the human circulatory system and nervous system. Preview Diagram 1: Chemical structure of caffeine Image source: http://ismaastricht.wikispaces.com/file/list The images above show the chemical structure of caffeine which has a chemical formula of C8H10N4O2. Caffeine was named by the International Union of Pure and Applied Chemistry
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