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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A heart attack is also known as a myocardial infarction. A heart attack is when a part of the heart muscle is damaged or dies because it is not receiving oxygen. A heart attack is the death of heart muscle and it is caused by a sudden block of a coronary artery by a blood clot. Coronary arteries are blood vessels that supply the heart muscle with blood and oxygen. Causing injury to the heart muscle can cause chest main and pressure. If blood flow is not restored within 20 to 40 minutes permanent
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IMPORTANCE OF PHYSICAL EXERCISE: INTRODUCTION: Physical exercise means systematic exercise of body.Our body is made out of many limbs or parts.For maintaining good health proper functioning of all the parts is important.Physical exercise keeps the limbs of our body fit and healthy. PHISICAL EXERCISE: Phisical exercise means the movement of various parts of the body.When we work only to exercise our limbs then we call it phisical exercise.It is necessary for those who work more with their brains
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my audience about how exercise controls weight‚ combats health conditions and diseases‚ and improves mood. Central Idea: Exercise and physical activity are a great way to feel better‚ gain health benefits and have fun. Introduction You’re sweating‚ panting‚ and have a feeling of euphoria. You don’t know why you feel so good when there has just been so much stress put on your body (Attention-Getter). We’ve all gone through this feeling of exhaustion known as exercise. It can tire us out‚
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The term “heart failure” sounds as if the heart has already failed. This can increase a person’s anxiety especially in the aging population that is a targeted community for this disease assuming that the failure is equivalent to death. Heart failure is actually the decline in the hearts ability to sufficiently pump oxygenated blood to the rest of the body. Many people can live with heart failure and are able to manage it through lifestyle changes‚ prescribed medication compliance‚ and regular physician
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you are exercising to lose weight‚ make sure to focus on aerobics. This type of exercise causes an increase in heart rate‚ which means you will burn fat at a higher rate. You can determine if an exercise is a
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Low body weight (especially from dieting) c. Regular weight-bearing exercise d. Occasional weight-bearing exercise 3. The primary target of physical training to affect hormones is: a. The neuroendocrine system b. Fat‚ bone‚ ligaments and tendons c. The skeletal muscles d. The heart 4. The adaptation of the body due to the overload imposed by regular exercise is known as the: a. Training effect b. Body composition effect c. The training stimulus d. Principles of training 5. Another
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times a week on blood pressure compared with patients that do not exercise. Lewis defines hypertension as “continuous blood pressure greater than 140 over 90‚ hypertension that is not controlled.” “Hypertension or high blood pressure is an important medical and public health problem. There is a direct relationship between hypertension and cardiovascular disease‚ and a proportional increase in the risk of myocardial infarction‚ heart failure‚ stroke‚ and renal disease with higher blood pressure.”
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VARYING EFFECTS OF ENZYME CONCENTRATION ON REACTION RATES OF MALATE DEHYDROGENASE CELL BIOLOGY 13 NOVEMBER 2007 Enzymes are biological catalysts. They are proteins that speed up reactions with low concentrations. These enzyme proteins are made up of linkages of amino acids. The links coil‚ and coil again forming a tertiary structure. This structure has a groove in it called an active site. The active site is
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Diction exercises will help you learn how to speak clearly. The athlete does warm-ups and stretches before an event: a singer does likewise. These exercises are the speaker’s warm-up equivalent. They prepare and train you to speak with ease. Good diction is NOT about changing your accent or making you ’talk posh’. It is about clarity - making sure what you say is heard. The most commonly known and used Diction Exercises are Tongue Twisters. There are many‚ each focusing on either a single letter
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