Chemistry 521 Exam I‚ Spring Quarter 7:30 - 9:00 PM‚ 25 April 2000 NAME 1. [10 points] What are the concentrations of HSO− ‚ SO2− ‚ and H+ in a 0.20 M KHSO4 solution? (Hint: 4 4 H2 SO4 is a strong acid; Ka = 1.3 × 10−2 for HSO− .) 4 2. [15 points] Calculate the pH of 1.00 L of the buffer 1.00 M CH3 COONa/1.00 M CH3 COOH (pKa = 4.74) before and after the addition of (a) 0.080 moles NaOH and (b) 0.12 moles HCl. (Assume there is no change in volume). 3. [10 points] The following reaction
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SCD also known as sickle cell disease affects the blood and cardiovascular system. There are six different types of SCD. The following discussion will include cause‚ symptoms‚ diagnosis‚ treatment and prevention. The proper education on this disease will give patients and the public a better knowledge of the common unfamiliarity with SCD. The cardiovascular system consists of the heart‚ arteries‚ capillaries‚ veins‚ and blood. The organs in the cardiovascular system are a vital part of the human
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number of exercises in which we had to come up with solutions to pass to the next one. The activities taught us to listen to different ideas and evaluate which one was more convenient. Also‚ we had to decide the best way to approach a problem and see what factors might influence the outcome‚ like trying to balance a platform with our weight. They made us use our analytical skills to relate this activities to our daily life and our role as college students. The lessons
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Stem cells Nowadays‚ stem cells are the hottest topic in the medical field. More and more researches are performed to investigate these mystic cells. In order to go deeper into this topic and fully understand it‚ let’s first take a look at the stem cells themselves‚ their origins and characteristics which make them so unique and crucial for the medical field. Stem cells are very complex and complicated‚ and‚ that is why‚ it takes a lot amount of time to get to the bottom of their structure to be
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“Scar Tissue” by Red Hot Chili Peppers Scar Tissue is the third most performed song by the Red Hot Chili Peppers during their live performances. The song was written by lead singer Anthony Kiedis about guitarist John Frusciante’s return to the band in 1998‚ and Kiedis’ own heroin addiciton. Kiedis’ heroin addiction played a large role in Frusciante leaving the band in 1992. Scar Tissue has a double meaning in the song’s lyrics; representing the rebuilding of strained relationships and the literal
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Tectonics Division of Pakistan Defination: Tectonics zones of Pakistan are the Eurasian Plate‚ Arabian Plate and Indian Plate which is part of Indo-Australian Plate. Eurasian Plate: The Eurasian Plate is a tectonic plate which includes most of the continent of Eurasia (a landmass consisting of the traditional continents of Europe and Asia)‚ with the notable exceptions of the Indian subcontinent‚ the Arabian subcontinent‚ and the area east of the Chersky Range in East Siberia. It also
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Ch. 1: Biology: Exploring Life 1) Slides 1 and 2: What is the main difference between physiological adaptation (as in sense‚ respond and adapt to the environment) and evolutionary adaptation? Evolutionary adaptation occurs over generations. Evolutionary adaptation does involve genetic change but it’s the change in traits as a result of genetic change that drives natural selection and evolutionary adaptation (just genetic change alone won’t drive evolutionary change). Physiological adaptation is
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the refractory period of cardiac muscle with that of skeletal muscle‚ and to explain why it is not possible to tetanize cardiac muscle. 4. To define extrasystole‚ and to explain at what point in the cardiac cycle (and on an ECG tracing) an extrasystole can be induced. 5. To describe the effect of the following on heart rate: vagal stimulation‚ cold‚ heat‚ pilocarpine‚ atropine‚ epinephrine‚ digitalis‚ and potassium‚ sodium‚ and calcium ions. 6. To define vagal escape and discuss its value. 7. To define
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Animal Tissues I. Objectives: Plant Tissues a. Illustrate‚ describe‚ and differentiate the various types of tissues characteristic of vascular plants b. Illustrate and describe how tissues are organized in the regions of the plant organ c. Recognize variations of each of the different tissues in different organs Animal Tissues a. Illustrate‚ describe‚ and differentiate the different types of animal tissues b. Illustrate and describe the organization of different tissues in an
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business. This is to the mental powers what the first is to the bodily. It gives intellectual dexterity. The man has a mastery of his special operation. He knows more about it than if he had two things to think of and care for. He becomes shrewd in every motion. He adapts his labor to the material; he discriminates between the qualities of that material. He meets the little difficulties of his work with more skill and less waste. These two advantages of the division of labor are shown in the different
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