Complexometric Determination Of Water Hardness By Angelica Aquino CHM 152 LL January 5‚ 2013 METHODS: 1. Prepare an approximate 0.004 M disodium EDTA solution. To prepare this solution‚ weigh about 0.7-0.8 g of Na2EDTA and dissolve in 500 mL deionized water in your plastic bottle. Make to to shake the bottle to dissolve the salt. 2. Obtain a 250-mL Erlenmeyer flask and transfer a 10 mL of CaCO3 using a buret into the flask. 3. Measure 30 mL of deionized water and add it into the titration
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11/09/2013 Unit 4 Health and Safety at work act 1974 This purpose of this act is to regulate the health‚ safety and welfare of individuals in the workplace. The act is enforced by the health and safety executive and local regulatory bodies. At Custom Care we have many policies and procedures that fall under the umbrella of Health and Safety these included- Company Health and safety Policy Accidents and incidents Chemicals (COSHH) Company Premises Display Screen COP (DSE) Policy on Eye
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Safety and Health Issues in Human Resources There are several health and safety threats to an organization’s employee health that an employer must address. These include: Chemical Hazards‚ Physical Hazards‚ Biological Hazards‚ Substance Abuse‚ and Work-related Stress (Bogardus‚ pp. 109-113‚ 2004). Organizations can protect employees most efficiently by addressing them with all five of the primary workplace management functions: plan and align the workforce‚ hire workers‚ deploy the workforce
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Electrical Safety Electricity is all around us‚ no matter where you work there are electrical outlets and machines that run off electricity. Due to how dangerous electricity can be Occupational Safety and Health Administration or OSHA has come up with safety standards when dealing with electricity. Their standards are designed to protect employees who are exposed to the dangers whether it be directly like working on an outlet or indirectly like using the outlet. Safety equipment is available for
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Effects of Water Pollution Image source: NASA Water covers 70% of the Earth’s surface and makes up over 60% of the human body. Water pollution affects marine ecosystems‚ wildlife health‚ and human well-being. The answer to solving pollution is to make changes in our daily habits and pay more attention to the types of products we consume. The following lists display causes of water pollution and the effects it has on human health and the natural environment. Causes of Water Pollution
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Without water no life and no future‚ from this pint I am with the Indian Nobel said”‚ water is called the elixir of life”. Water is necessary for all living beings. Human beings‚ animal‚ all the kinds of plants need water. Although the earth consist of two third of water and third of land‚ many countries still face a crisis on storage of water. This crisis has the potential to be a reason that damages the nation. Yemen is one the highest rate of consuming of water sources in the Middle East. Therefore
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Water Pollution All around the world‚ countries are fighting to keep their water clean. Whether it’s streams‚ rivers‚ lakes‚ or the ocean‚ countries have taken great measures to maintain a high quality of water for both human consumption and as a key component to the environment. We deal with the pollution problems and then decide on ways to clean it up. This valuable resource is the key to survival. Both plants and animals depend on water for their growth‚ so the water must be kept clean
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Water Crisis and Water Management in Pakistan 1- Introduction Water plays a vital role in a country’s economy. Water has been critical to the making of human history. The earliest agricultural communities emerged where crops could be cultivated with dependable rainfall and perennial rivers. Simple irrigation canals permitted greater crop production and longer growing seasons in dry areas. Some of the problems faced by the world population are as below. • More than a billion people lack access
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Aim: To compare the foaming capacities of five different commercial soaps. Apparatus: 5 test tubes‚ 5 conical flasks (100 ml)‚ test tube stand‚ Bunsen burner and stop watch. Materials Required: 5 different samples of soap and distilled water Theory: The foaming capacity of a soap sample depends upon the nature of soap and its concentration. This can be compared for various samples of soaps by taking the same concentration of solution and shaking them.The foam is formed and the time taken
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when they move about. They can also forget where they have put things down and fail to understand the consequences of actions such as touching hot liquids or pulling on cupboard doors. It is important that you develop an awareness of health and safety risks and that you are always aware of any risks in any situation you are in. If you get into the habit of making a mental checklist‚ you will find that it helps. The checklist will vary from one workplace to another‚ but could look like the
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