01/27/2013 Abstract: What can be found from this experiment is as follows‚ Introduction/Background: This lab was about determining water hardness. Water hardness is the amount of metal ions in the water. The most common found ion in the water is calcium ions and typically with a charge of +2. Water hardness plays a big significance in our daily life because to many metal ions in our drinking water can have adverse effects on our body. You can measure the water hardness by EDTA titrations. EDTA
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Chemistry 108/lab Section C2A Fall 2014 Amee Karelia Date of experiment: 9/16/2014 Date of submission: 9/23/2014 Experiment # 3 Purpose: the purpose of this experiment was to explore the distinctions between physical and chemical properties and between physical and chemical changes. Lab questions: 1. Based on my observation CaCl2 is soluble in water. 2. When 15% of HCl was added to CaCl2 as the teacher was performing the experiment I observed and realized some changes took place physically
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hydrocolloids. The first combination of ingredients we played with utilized the gel which occurs when alginate is introduced to a calcium. The product‚ which acted as the catalyst for our ideas‚ was designed for gluing meat pieces into uniform blocks‚ cylinders and whole new structures. The product consists of two components‚ one a sodium alginate and one a calcium lactate. While the idea of using these two ingredients to bind proteins was interesting we were more excited by its other possibilities:
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happens due to your bones being brittle and weak. Even if you’re being told that drinking milk that contains calcium can help prevent Osteoporosis it isn’t going to magically disappear from your developing of it. To completely understand how to fully prevent yourself from getting Osteoporosis in your life it’s better to first understand what the bone remodeling process is‚ the relationship of calcium and the bones‚ noticeable symptoms and ways to prevent yourself from getting osteoporosis.
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the person gets older and there bones will gain strength. The best exercise for the bones is the weight-bearing kind‚ which forces the bones to work against gravity. Certain cells called osteoblasts constantly bring calcium into bones to make them stronger and osteoclasts take calcium from bones. Exercise increases the rate that osteoblasts strengthen bones. Inactivity weakens the bones. So any exercise that places force on a bone will strengthen the bone. Most people achieve their peak bone mass
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Hard -120-180 mg/l Very hard 180 + mg/l It is important to study the hardness of water because of the problems it can cause when left untreated. Hard water can cause “scale‚” or build-up in plumbing fixtures and water heaters.3 Scale occurs when calcium carbonate‚ CaCO3 ‚ is deposited as calcite crystals on the inner surfaces of pipes‚ and evaporator surfaces. This occurs when water with a high hardness value is evaporated or heated. This buildup can block pipes‚ make heat transfers in boilers
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found as ergocalciferol (D2) and cholecalciferol (D3) * most land animals can use both‚ except chickens (only D3) * fish appear to use only D3 * both activated in plants/animal skin by UV radiation * D3 primarily used as precursor for calcium regulation Vitamin E: tocopherol * Active form is alpha tocopherol * good antioxidant: most feed antioxidants have vit E activity‚ but only 1/6 that of -tocopherol * antioxidants used to prevent oxidation of lipids (mainly phospholipids)
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forward again. If it runs into the solid object again it will do the same thing until it can get past the object. 2. Describe the mechanism of movement in Paramecium based on fluxes of calcium in cilia. When the calcium channels open up and allow the influx of calcium ions into the cell‚ the increase the calcium ions causes the reversal of the cilia and the paramecium starts to swim backwards. 3. How do paramecia react to each cation solution? Did you noticed differences in direction‚ duration
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Osteoporosis causes bones to become weak & brittle due to low bone mass & bone tissue deterioration. Chronic & progressive Most common origin of bone disease in U.S. Fractures transpire easily. Primary cause of fractures in elderly. Bone formation should match bone resorption. Osteoblasts Build (form) new bone & generate organic matrix & mineralize bone. Osteoclasts Breaks down bone & cause bone resorption. Osteocytes Maintain bone by directing when/where bone remodeling is to occur. Parathyroid
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Movement: The bones of the upper and lower limbs pull and push‚ with the help of muscles. 3 storage as a mineral store. 97% of the body’s calcium is stored in bone. Here it is easily available and turns over fast. In pregnancy the demands of the fetus for calcium require a suitable diet and after menopause hormonal control of calcium levels may be impaired: calcium leaches out leaving brittle osteoporotic bones. 4. Protective. Skull for the brain and rib for the heart and lungs. 5. Blood cell
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