The Rate Of Photosynthesis: Lab report 1) Construct a graph of your data 2) Using the graph‚ estimate the time at which 50 percent of the leaf disks were floating on the surface. The point at which 50 percent of the leaf disks are floating will be you point of reference for future investigations Using the graph the estimated time that roughly 50% of the leaf disks were floating on the surface was around the 10th minute. At the 10th minute our number rose up to
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Introduction The nation’s high unemployment rate is a result of a severe drop in demand for goods and services. It’s not a reflection of longer-term structural changes in the economy but rather cyclical changes in the economy. The demand for goods has been limited because of tight credit‚ decreases in government budgets‚ suppression of demand by consumers and foreign markets‚ and the inability by the fed lower interest rates. Even with the low level of interest rates the Fed is currently practicing a tight
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experiment is to determine the rate law and the activation energy for the reaction between persulfate ion‚ S2O82-‚ and iodide ion‚ I-: S2O82-(aq) + 2 I-(aq) 2 SO42-(aq) + I2(aq) The rate law can be written as Reaction rate = (1) Where m and n are the orders with respect to S2O82- and I-‚ respectively‚ and k is the rate constant. Determining the rate law involves determining the values of m and n. The temperature dependence of the rate constant is given by (2)
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Rates of Reaction Coursework Aim: To find out how different concentrations of sodium thiosulphate (Na S2 O3) affects the speed of its reaction with Hydrochloric acid (HCL). Introduction When Sodium Thiosulphate and Hydrochloric acid react they produce a cloudy precipitate. Both of the chemicals are clear solutions and they react together to form a yellow precipitate of sulphur‚ the equation for this reaction is: Na2 S2 O3 + HCL‚ H2 O + NaCL + SO2 + S Sodium Thiosulphate + Hydrochloric
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The Health Effects of Caffeine on the Human Body Caffeine‚ known as a “drug” is something that many people consume on a daily basis. It is very common and can be consumed in many different ways. Caffeine can be consumed through drinks‚ medicine and/or foods. In one way or another‚ caffeine is used as a stimulant to help during the day when most being to feel tired or sluggish. Caffeine is considered a pick me up and helps to boost ones energy level in order to complete daily tasks. The taste of caffeine
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The purpose of this practical is to investigate how the pulse rate of humans changes when they exercise. Someone who is physically fit can supply their muscles with enough blood‚ carrying glucose and oxygen‚ for an activity at a lower heart and breathing rate. The fitter you are the lower your resting heart rate. You and your classmates will be the humans investigated. SAFETY: If you know you have any condition that affects you doing exercise‚ please make sure your teacher knows before you start
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for each company. Please show all numerical equations including numerator and denominator‚ not just a final number. Present your work in a comparative format using a table as illustrated: 1) Gross profit for 2008 PepsiCo Coca-Cola and Gross profit rate for 2008. 2) Percent change in operating income from 2007 to 2008. 3) Accounts receivable turnover for 2008. 4) Days sales in receivable for 2008. 5) Inventory turnover for 2008. 6) Days inventory on hand for 2008. 7) Increase (decrease)
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Name_______________________Period___________ Chapter 9: Cellular Respiration: Harvesting Chemical Energy Overview: Before getting involved with the details of cellular respiration and photosynthesis‚ take a second to look at the big picture. Photosynthesis and cellular respiration are key ecological concepts involved with energy flow. Use Figure 9.2 to label the missing parts below. See page 163 of your text for labeled figure. Concept 9.1 Catabolic pathways yield energy by oxidizing organic
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Exchange Rate December 2014 THE EXCHANGE RATE KEY DEFINITIONS AND CONCEPTS 1. How is the exchange rate defined? The exchange rate is the price of a unit of foreign currency in terms of the domestic currency. In the Philippines‚ for instance‚ the exchange rate is conventionally expressed as the value of one US dollar in peso equivalent. For example‚ US$1 = P44.00. In every exchange rate quotation‚ therefore‚ there are always two currencies involved. 2. Why is the exchange rate important? The exchange
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Aerobic cellular respiration and oxygenic photosynthesis are two cellular processes that have evolved in similar ways. Cellular respiration is responsible for the process of ATP‚ meanwhile oxygenic photosynthesis is the process of turning light energy into food. It is evident that both of these processes have their own reactants‚ products‚ and biochemical pathways. Both of these processes have evolved from their primitive original state‚ but it is important to understand that oxygenic photosynthesis
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