Kinetics 6.1 Rates of reaction 6.2 Collision theory 6 16.1 Rate Expression (AHL) 16.2 Reaction mechanism (AHL) 16.3 Activation energy (AHL) 6.1 Rates of reaction 6.1.1 Define the term rate of reaction. 6.1.2 Describe suitable experimental procedures for measuring rates of reactions. 6.1.3 Analyse data from rate experiments. © IBO 2007 Figure 601 An explosion is a quick reaction D ifferent chemical reactions occur at different rates (i.e. speeds). Some
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this report you will learn of how my group and I performed our lab on blood pressure and what the results mean. We found the blood pressure before and after sixty seconds of jogging in place to see the effects. We found that after the physical activity the subject’s blood pressure was higher. From this we take away that physical activity does have a significant effect on the heart and blood pressure. Background: Blood pressure is the measured force applied to the artery walls as the heart pumps
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Blood Pressure – Making a formal inference We often talk about a person’s “blood pressure” as though it is an inherent characteristic of that person. In fact‚ a person’s blood pressure is different each time you measure it. Blood pressure reacts to stress‚ diet and genetics. Gender | BP | BP1 | BP2 | BP3 | BP5 | BP7 | BP10 | BP15 | diet | female | 101 | 101 | 101 | 101 | 101 | 101 | 101 | 101 | LowFat | female | 103.3 | 103.3 | 103.3 | 103.3 | 103.3 | 103.3 | 103.3 | 103.3 | LowFat | male
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Formative Assignment Including PSAfor class IX PHYSICS 1. Motion is relative or absolute? Give reason. 2. Name the physical quantity that essentially changes as a body moves. 3. Is displacement or distance independent of path? How? 4. Give example of a motion in which distance is covered but there is no displacement. 5. Give one example of motion where‚ distance and displacement are same. 6. When moving car returns to the same point what will be the ratio of
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The affect of temperature on the rate of movement of woodlice Aim: The aim of this experiment is to establish whether a change in temperature affects the rate in which woodlouse move. I measured the rate by timing the woodlouse to move a set distance of 20cm‚ and altered the surrounding temperature by submerging a clear tube in water with different temperatures controlled by a water bath. Research: It is to be believed there over 3000 different species of woodlice‚ a total of 42 species
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Aim: To determine the effect of altering concentration (mol dm-3) of hydrochloric acid (HCl) on the rate of reaction (mol dm-3 s-1) for the following chemical reaction: CaCO3(s) + HCl(aq) CaCl2(s) + H2O(l) + CO2(g) Research question: How does altering concentration (mol dm-3) of hydrochloric acid (HCl) affect the rate of reaction (g/s) for the following reaction: CaCO3(s) + HCl(aq) CaCl2(s) + H2O(l) + CO2(g) Background information: The reaction between calcium carbonate and hydrochloric acid
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Low Blood Pressure? Low blood pressure is not always a sign of a problem. But if you have symptoms of low blood pressure‚ your doctor can diagnose the condition and uncover the cause. Symptoms of dizziness and lightheadedness when you stand up from sitting or lying down -- with a decrease in your blood pressure -- may indicate a condition called postural hypotension. A wide range of underlying conditions may also cause your symptoms. It’s important to identify the cause of low blood pressure so appropriate
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systolic blood pressure measured in the auscultatory method is more accurate than that measured in the palpitation method because the palpitation method is prone to more human errors such as how strong the pulse is‚ where it is located‚ how hard the wrist is pressed during palpitation and a stethoscope which is used in the auscultatory method is more sensitive than feeling a pulse. Hearing the pulse involves less human error than feeling it. 2. The maximum pressure exerted when blood is ejected
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the “Blood Pressure and Pulse Experiment” is to determine how postural changes‚ exercise and cognitive stressors affect blood pressure and heart rate. Background The pressure of blood in the circulatory system is‚ also known as blood pressure (BP) is “the force exerted on a vessel wall by contained blood. This is expressed in millimeters per mercury (mmHg)” (Marieb & Hoehn‚ 2016‚ pp. 708). There are two parts to blood pressure: systolic pressure and diastolic pressure. “Systolic pressure is the
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Heart Rate Research Question: Do different exercises have different effect on heart rate? Method: 1. Find test subject 2. Prepare for activity (stretching) 3. Take heart rate of subject before exercise 4. Record heart rate 5. Do sit ups for 2 mins 6. Time using stop watch 7. Record heart rate 8. Allow subject to rest (lower heart rate) 9. Begin next exercise 10. Jumping jacks for 2 mins 11. Time using stopwatch 12. Record heart rate 13. Allow subject to rest (lower heart rate) 14. Squats for
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