ALKALINE EARTH METALS what are alkaline earth metals? Alkaline earth metals are elements that are in the second group of the periodic table. the elements have two electrons on the outermost shell. the elements include Beryllium‚ magnesseum‚ calcium‚strontium‚ barium and Radium.The alkaline earth metals are all silvercolored and soft‚ and have relatively low densities‚ melting points‚ and boiling points. In chemical terms‚ all of the alkaline metals react with the halogens to form the alkaline earth metal halides
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Osteoporosis is a bone disease in which the bones become very brittle and weak. Even a little cough could fracture your bone. Causes: when you’re in your younger ages you constantly make new bone how much you store when you reach your peak can determine whether or not you develop osteoporosis. Risk factors of this disease are: • Your Sex‚ in which women are most likely to get it than men. • Your age‚ as you get older your body stops making “new bone”‚ so you will have a greater chance in getting
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CaCO3 K2CO3: 9.25 g x 1 mol / 138.2 g = 0.07 mol CaCO3 CaCl2 is limiting reagent Theoretical yield = 0.06 mol CaCO3 x 100 = 6.40 g CaCO3 Percent yield = 6.15 g / 6.40 g = 96.1 % Post-Lab Questions 1. In this first trial‚ I saw that there was less calcium carbonate that was produced. 2. The results were expected because less reactant was used in the first trial compared to the second trial. 3. Reducing the amount of CaCl2 used would still keep this substance as the limiting reagent and therefore
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arthritis‚ osteoporosis and injuries increases with every passing moment. Knowledge of how to care for ourselves is important to reducing our risks. Maintaining proper nutrition is an important element. We have to be sure that our diet is rich in calcium and other important nutrients. Osteoporosis is the most well known condition that affects our bones. “In the early stages of osteoporosis‚ there may be no signs or symptoms”. (www.webmd.com) Osteoporosis is often not diagnosed until a bone
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02/11/10. “Beryl/Beryllium”. Mineral Information Institute. http://www.mii.org. 03/11/10. “Beryllium”. United States Department of Labour. http://www.dol.gov. 04/11/10. “Beryllium-Be”. Lenntech. http://www.lenntech.com. 04/11/10. Suanders‚ Nigel. 2003. Calcium and the Alkaline Earth Metals. Heinemann Library: Chicago‚ Illinois.
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Title: Determination of Water Hardness Using a Titrator Purpose: To become familiar with the concept of water hardness‚ practice a titration technique using a titrator‚ and determine the hardness of the local water supply. Procedure: 1. Gather the test tube holder‚ small stopcock‚ 10-mL syringe (titrator)‚ and 2 thick textbooks and the LabPaq box or 5-6 thick textbooks. 2. Remove the plunger from the titrator and place it back in your LabPaq box. 3. Attach the stopcock to the tip of
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materials before and after the reaction‚ then we can prove if the Law of Conservation of Mass is true. * Materials: * Goggles * 25mL graduated cylinder * 2 resealable bags * Scale * Antacid tablet * Scoopula * CaCl2 ‚ Calcium Chloride * NaHCO3 ‚ Sodium Hydrogen Carbonate * Universal Indicator * Procedure Part A 1. Measure 25mL of water and put into a resealable bag. Flatten air out of the bag and seal it. Record the mass in Table 1. 2. Record the
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history‚ age‚ sex‚ menopause‚ previous injuries‚ weight and body size‚ diet‚ physical activity‚ smoking‚ and alcohol consumption. There are many things we can do as we age to prevent these painful conditions. Eating a healthy diet that is high in calcium‚ vitamin D‚ fruits‚ and vegetables is a big help. Limiting your intake of protein‚ sodium‚ and caffeine‚ and not smoking or drinking alcohol also decreases your risks. Living this healthy lifestyle‚ staying as physically active as possible‚ and seeing
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gain in order to live a healthier‚ happier life. Osteoporosis & Strength Gain 101 1. What Is Osteoporosis? Your bones are a living tissue. A certain amount of bone is always being broken down and reformed‚ in order to help the body balance its calcium levels. Normally‚ these two processes happen at the same speed‚ so there’s no overall change in bone mass. When a person develops osteoporosis‚ their bone tissue is breaking down faster than it can be reformed‚ so the bones start become brittle and
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This limestone rotary kiln can produce lime with advantages of strong ability to react chemically‚ low volume density and large specific surface. At present‚ it has been one of the most preferred auxiliary equipment for steel-making‚ coking and calcium carbide industries. Moreover‚ it is also the best kiln type in limestone industries for its strong adaptability to raw and fuel materials‚ convenient maintenance and low consumption benefits. As the lime rotary kiln adopts new modern technology of
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