Answer: Plastic was thought to be a boon but it turned out to be a curse. Plastic can be very harmful as it produces harmful gases when it is burned. As it is non bio degradable‚ it is harmful to the soil and takes hundreds of years to degrade or decompose. Plastic is a boon for man but it is a curse for the master. It makes life comfortable for man but life tiring for the environment. Once animals have eaten it and due to choking they die Plastic is very harmful to living things. We
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reusable containers and cutlery‚ laboratory equipment etc. Although PHB has a different molecular structure to polypropene‚ it has remarkably similar physical properties which can be used as wrapping or packaging material also. PHB consists of a long carbon chain‚ indicating it has a rather strong dispersion force because of high molecular weight. Hence it has a considerably high boiling and melting point. Its tensile strength is also close to that of polypropylene‚ allowing it to be made into reusable
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What is the environmental and social impact of using coal to produce electricity? According to the Energy Information Administration (EIA)‚ burning fossil fuels accounted for approximately 67% of the total amount of electricity produced in the United States in 2015. Coal and natural gas lead all electricity production at 33% each and the other 1% came from petroleum. The way that coal produces electricity is through a process of energy transformations which are completed in coal power plants.
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MAKING SALTS. AIM: In this experiment the aim was to get Copper Carbonate to react with Sulphuric Acid to get Copper Sulphate. EQUIPMENT USED: o 5 Grams of Carbon Carbonate o Weighing Boat‚ Spatula & Scales o 25 cm³ Sulphuric Acid o Beaker o Tripod and Gauze o Bunsen burner‚ Splint and Matches o Filter Funnel and Filter Paper o Conical Flask o Glass Dish RISK ASSESSMENT: o Sulphuric Acid – Corrosive o Safety Glasses and Lab Coats to be worn o Any Spillage‚ dilute with water
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grinder for super-fine grinding materials with hardness less than 6 in Moh‘s scale and humidity less than 6 percent such as kaolin‚ limestone‚ basalt‚ calcite‚ marble‚ talcum‚ barite‚ gypsum‚ dolomite‚ bentonite mud‚ mica‚ pyrophyllite‚ sepiolite‚ carbon black‚ diatomite‚ graphite‚ alunite‚ fluorite‚ potassium feldspar‚ phosphorite‚ pigment‚ up to 200 kinds. The granularity (or final size) of the finished products can be freely adjusted between 325-3000meshes (0.045-0.0057mm)‚ and the capacity (ton/hour)
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content from humid air to be absorbed into it thus reducing the its efficiency. Next‚ during the impregnation process. The mixture need to stir continuously until it completely dried to ensure all KOH has successfully impregnate with the OPKS activated carbon. For the calcination process‚ the
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Uses &/or Descriptions Aluminum A light metal used in making airplanes‚ buildings‚ pots and pans‚ etc. Bromine Used in photography‚ medicines‚ insecticides‚ etc. Calcium A soft‚ metallic chemical element found in limestone‚ marble‚ chalk‚ etc. Carbon Found in coal‚ oil‚ gas‚ living things‚ and inks. Chlorine Used in bleach‚ in chemical to kill germs in swimming pools‚ and found with the element sodium in table salt. Chromium A shiny metal usde on bumpers of some cars‚ household fixtures‚ etc
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have caused a large climate drop. Scientist have proven that global warming is an issue‚ but to what effect. It has caused the glaciers in the North Pole to melt‚ and the winters needed for the survival of the wildlife to diminish. The expulsion of carbon dioxide is seen as the root cause of the issue we face today. If the people of the world don’t start making the right decisions to watch the products they use‚ the world as we know it will not last much longer. Auto makers have created many new
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to decrease costs and increase environmental safety. This new process will enable companies to create silicon-based products without using the old method of using compounds like quartz sand (Si0 )‚ high temperatures‚ an electrical current‚ and a carbon compound (to bond with oxygen) to create impure silicon metal. This process is very expensive and creates many toxic byproducts. Still the old processes impure silicon is not yet ready for use and must still be purified even further to insure quality
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UNIVERSITY TUNKU ABDUL RAHMAN FACULTY OF SCIENCE BACHELOR OF SCIENCE(HONS)BIOCHEMISTRY YEAR 1 SEMESTER 1 UDEC1164 ORGANIC CHEMISTRY Name: Cheong Wai See Student ID: 1404057 Practical Group: 1 Title of Experiment: Name of Tutor: Dr. Mohammod Aminuzzaman Date: 24 February 2016 Tiltle: Nitration of Methyl Benzoate Objectives: -To prepare methyl-3-nitrobenzoate from nitration of methyl benzoate by electropilic aromatic substitution. -To calculate the percentage yield and get the melting point of methyl-3-nitrobenzoate
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