Unit 5 |1. |Rising air expands and cools; sinking air is compressed and warms. Typically‚ the size of the temperature change is: | | |A. | | |5oF/1000 ft change in elevation going up‚ and 3oF/1000 ft coming down | | |
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are made‚ how many grams of manganese(Ill) oxide are also made? d. How many grams of glycerin will be needed to react with 50.0 g of KMn04? How many grams of C02 will be produced in the same reaction? 196. Calcium carbonate found in limestone and marble reacts with hydrochloric acid to form calcium chloride‚ carbon dioxide‚ and water according to the following equation: CaC03(s) + 2HC1 {aq) —♦ CaCl2(a<jf) + C02(g) + H20(/) a. What mass of HCI will be needed to produce 5.00 x 101 kg of CaCl2? b. What
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instruments‚ recreational skis‚ wheel barrows‚ lawn mowers‚ and outdoor furniture. Magnesium is also found in asbestos. Asbestos was used in insulating materials up until it was found to cause cancer and other types of lung diseases. It is as important as calcium‚ and is found in bones‚ blood and soft tissues. Magnesium is essential for
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Osteoporosis Many people have known at least one person in their life who has suffered from the term “osteoporosis”. Osteoporosis is a commonly heard of bone disease that effects many. The word osteoporosis literally means “porous bone”. When looked at microscopically‚ bones will appear to have a honeycomb appearance under normal‚ healthy circumstances. When he or she has osteoporosis‚ the microscopic honeycomb shape will have larger spaces between and within its appearance. The bigger spaces within
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Osteoporosis is a disease that affect strength of the bones ( literally the word osteoporosis means “ porous bone” ) leading to increased risk of bone fractures. The bone strength has two main properties‚ the mass and the quality of the bone. The bone is a living tissue made up of tough elastic collagen fibers and minerals and contains cells that make and moulds itself in a process called bone resorption‚ it also forms the rigid skeletal framework that protects body organs. Osteoporosis is influenced
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Survey of the Sciences Unit 4: The Science of Fireworks 7-7-14/7-14-14 What is a firework? An explosive or combustible used for display. In the 19th century the introduction of new ingredients such as magnesium and aluminum greatly heightened the brilliance of such displays. There are two main classes of fireworks‚ force-and-spark and flame. In force and spark compositions‚ potassium nitrate‚ sulfur‚ and finely ground charcoal are used‚ with additional ingredients that produce various types
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for aluminum when the equation is balanced using the lowest‚ whole-numbered coefficients? a) 1 b) 2 c) 3 d) 4 5. Calcium phosphate reacts with sulfuric acid to form calcium sulfate and phosphoricacid. What is the coefficient for sulfuric acid when the equation is balanced usingthe lowest‚ whole-numbered coefficients? a) 1 b) 2 c) 3 d) none of these 6. What is the molar mass of calcium permanganate? a) 159 g/mol b) 199 g/mol c) 216 g/mol d) 278 g/mol 7. What is the molar mass of aspartic acid‚ C4O4H7N
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OUR OWN HIGH SCHOOL‚ Al WARQA’A‚ DUBAI SUMMATIVE EXAMINATION-2‚ MARCH -2014 Name: ______________________________________ Grade: VII Sec: ____ M Marks: 90 Time: 2 1/2 hours Subject: SCIENCE Date: 09/04/2014 General Instructions: 1. This question paper has 4 pages. 2. All questions are compulsory. 3. Question numbers 1 to 10 are questions of one mark each. 4. Questions 11 to 16 are very short answer questions of two marks each. 5. Question numbers 17 to 24 are short answer questions of 3 marks each
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through a process called injection moulding. Plastic pellets are heated through a barrel and then the melted plastic is injected into a mould to make the different polypropylene parts. The ball bearing The ball bearing is made of a textured tungsten carbide. The material is superior to other metal such as steel as it has the particular property of being resistant to deformation. The ball is designed to be a perfect sphere that can literally grip most any writing surface. Its surface is actually composed
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you cannot change are gender‚ age‚ small frame‚ ethnicity‚ family history. The risk factors that you have the opportunity to change are hormones‚ anorexia nervosa‚ Calcium and Vitamin D intake‚ medication‚ activity level‚ smoking‚ drinking. There are ways to keep those bones healthy! You can start by eating a diet that is rich in Calcium and Vitamin D. You can find these in dairy products‚ juice‚ cereals‚ and breads. Exercise! Start taking a walk or go dancing regularly. Make it fun. It doesn’t have
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