To investigate the effect of different caffeine concentration on the heartbeat rate of Daphnia at room temperature. Introduction: Caffeine is found‚ and produced in many plant species to function as a natural pesticide‚ and as an inhibitor of seed germination of other nearby coffee seedlings to give it a better chance of survival. Caffeine is able to paralyze and kill certain insects upon feeding on the plants that produce caffeine. Coffee‚ tea and cocoa are common caffeine-containing
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Aim: To observe the effect of temperature on the rate of the iodine clock reaction using ammonium persulfate Assessment criteria: Design Variables: Table 1.1: List of dependent and independent variables. S.No | Dependent variables | Independent variables | Controlled variables | 1. | Rate of reaction | Temperature | Concentration | 2. | - | - | Pressure | 3. | - | - | Volume | Hypothesis: The iodine
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Investigation How does the concentration of the sodium thiosulfate affect the rate of reaction to hydrochloric acid? contents page 1: contents‚ aim‚ prediction‚ equation‚ diagram page 2: equipment‚ preliminary experiments page 3: page 4: page 5: page 6: page 7: page 8: Aim: In my investigation I am trying to find out how the rate of reaction between sodium thiosulfate and hydrochloric acid gets affected but the concentration of the thiosulfate. Prediction: My prediction is that the increased
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Taiwan’s low birth rates in the past years. In recent years Taiwan’s birth rate has been among the lowest in the world. It is understood that people from different backgrounds may put different interpretations on the topic. When it comes to this hot topic‚ some people believe that the consistent low birth rates will produce an adverse impact on Taiwan’s economy while some advocate that the government is to blame for the issue and should take some effective measures to prevent the birth rate from declining
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An Investigation into the Factors Affecting the Rate of the Reaction between Calcium Carbonate and Hydrochloric Acid A chemical reaction is the process by which atoms or groups of atoms are redistributed‚ resulting in a change in the molecular composition of substances. The reaction rate is how quickly a reaction occurs and this can be affected by four different factors: ¡¤ changing the surface area of any solids involved ¡¤ changing the concentration of reactants in solution ¡¤ changing the temperature
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Area P Write down the aim of your Investigation. To investigate the effects of change in concentration on the rate of reaction between Sodium Thiosulphate and Hydrochloric Acid. Briefly describe your Preliminary Experiment and include your results. Explain how these results have helped you plan your main experiment (p8b). An increase in concentration will lead to an increase in the rate of reaction because there will be a greater number of particles per unit/cm3. The particles will be closer together
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P LANNING Aim: Our aim is to detect which factors affect the rate of the decomposition of hydrogen peroxide with a fixed mass of catalyst. A catalyst is a substance‚ which alters the speed‚ or rate of a chemical reaction but is chemically unchanged at the end of the reaction. The two factors that we can change are the temperature and the concentration. We chose to vary the concentration of hydrogen peroxide. The catalyst to speed up the reaction without affecting the result will be manganese
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EEE507: MEASUREMENT AND INSTRUMENTATION II LECTURE NOTES ADCs AND DACs By: Olorunniwo O. Dept. of Electronic & Electrical Engineering Obafemi Awolowo University Ile-Ife Page. | 1 1. ADCs and DACs • Basic DAC Architecture: -binary weighted; -R-2R ladder • Basic ADC: -flash; -dual-slope ; and -successive approximation • Sample and Hold Circuit • Aperture Error • ADC/DAC specifications: -INL; -DNL; -dynamic range. • Oversampling • Noise-shaping and sigma-delta converters 1.1 INTRODUCTION
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PULSE OXIMETRY Submitted by: Joshua Martin Rhoanne Feleo Submitted to: Mrs. Fontanilla Pulse Oximetry What is a Pulse Oximeter? * A Pulse Oximeter is a device used to perform the diagnostic procedure for determining the: * Percentage of hemoglobin (Hb) that is saturated with oxygen The oxygen
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heart rate‚ breathing rate and body temperature before and after a period of exercise. I will also present the data collected before and after a period of exercise with reference to validity. As part of my Health and Social Care Level 3‚ I am required to collect data on pulse rate‚ breathing rate and body temperature before and after a period of exercise. I was not able to collect any data on temperature because I did not have any temperature dots. Pulse rate before exercise Pulse rate after
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