Water and Quality Contamination Rashundra Stakley SCI2-7: Dependence of Man on the Environment Instructor: Shameema Sarker October 27‚ 2014 Water and Quality Introduction. Background: According to the Millennium Development Goals Report 2012‚ 783 million people‚ or 11 per cent of the global population‚ remain without access to an improved source of drinking water. Also the United Nations has long been addressing the global crisis caused by insufficient water supply to satisfy basic
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Experiment 1: Synthesis of Copper Compounds Introduction This experiment involves the synthesis of compounds originating from pure solid copper. By applying solubility rules and the reactive properties of substances‚ many compounds which would otherwise be costly to extract from nature are able to be synthesized in the laboratory. Laboratory synthesized may sometimes be more economical than natural extraction‚ however it poses its own problems with the amount of substance that is actually yielded
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Introduction: The purpose of this lab was to learn how to use salicylic acid to make aspirin. Aspirin is the most widely used over-the-counter drug in the world. The average tablet contains about 325 milligrams of acetylsalicylic acid with an inert binding material such as starch. Aspirin is used to relieve pain‚ reduce inflammation‚ and lower fever. Aspirin originally was derived by boiling the bark of the white willow tree. Although the salicin in willow bark has analgesic properties‚ purified
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Pure aluminium is a relatively soft‚ silvery white metal. When exposed to air‚ a thin coating of Aluminium oxide gives it a dull lustre. It is three times less dense than water‚ and has great strength when alloyed‚ it doesnt rust and has high electrical conductivity‚ and Aluminium is also ductile‚ making it a very useful metal. Aluminium readily makes alloys with copper‚ zinc‚ magnesium‚ manganese and silicon. Aluminium foil is 92-99% pure aluminium. Other uses of aluminium alloys include computers
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“Just keep swimming‚ just keep swimming‚ just keep swimming‚” chants a blue tang fish named Dory from the award winning children’s film Finding Nemo. Throughout this movie‚ true character is shown and can help educate adolescents who watch the film. Character is defined as caring for others‚ to have courage‚ and to be true to yourself. The characters in Finding Nemo cleverly follow the definition of character. The movies characters show true character by sticking by each others side‚ always believing
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Introduction and application areas for MEMS Introduction: The micro mechanical device embedded with electronics/electrical system fabricated through a mix of integrated circuit manufacturing and micro-machining process where material is shaped by etching away micro layers is called Micro Electro Mechanical System (MEMS). The intelligent electronic system part is integrated in the same way of IC device fabrication. The most popular material used for MEMS is Silicon for it’s semiconductor ‚ physical
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The camera I use has been rented from the ERC on a regular basis‚ and is a Canon 600D or 700D. The photo’s i’ve captured for this project were shot on the standard lens‚ with a variety of settings. I also often use a mini LED light with a daylight filter in order to create more depth in the shadows in my images‚ I usually place this somewhere away from the camera in order to create angled shadows instead of images being frontlit. To start this project‚ I experimented with different ways of showing
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harmful to your health. However‚ rusting pipes can cause severe damage to your home‚ and its foundation when leaks occur. A Benjamin Franklin plumber in Arlington can provide repiping of your home. Milky white or cloudy water is typically due to air bubbles related to the water authority providing service on a water main. Fill a clear glass with water and set it aside. If the water starts to clear at the bottom of the glass first‚ the condition is due to trapped air. It is not a threat to your health
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6. Filtered the solid and added sulfuric acid‚ H2SO4 (aq)‚ to it. | sulfuric acid cleans off the copper | 7. Added zinc‚ Zn (s). | bubbles‚ zinc turns white | 8. Poured off liquid and rinsed | reddish specs‚ blue-ish liquid | Materials * 250 mL beaker * 100 mL beaker * 2 graduated pipettes * 50 mL graduated cylinder * Funnel and filter paper * Spatula * Copper power‚ o.i g * 8 M nitric acid‚ HNO3‚ 2 mL * 1 M sulfuric acid‚ H2SO4‚ 15 mL * 8 M sodium
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more efficiently. For the density and rheological properties a mud balance is used to test density i.e. fill the cup so that a little is ejected through the hole at the top and then move the weights until balance is achieved which is indicated by the bubble in the spirit level. The rheological properties are tested at room temperature and heated using a rotational viscometer which has shear rates of 600rpm; 300rpm‚ 200rpm‚ 100rpm‚ 6rpm‚ 3rpm or “gel” and 10second and 10minute gel can also be found. These
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