Lab Report: Hard Water Purpose: The purpose of this lab is to determine whether a liquid is hard water or not. Background: Hard water is the water that has a high amount of mineral in it‚ usually Ca2+ and Mg+. These cations enter the source of water by leaching from minerals within a wet underground layer of water- bearing rock‚ or an aquifer. According to the WHO‚ hard water is not harmful to human’s health but it’s a serious problem in the water industry. Household plumbing and appliances
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Water is the most important substance in our evolution and our daily lives. Without water‚ life as we know it would not have been possible. This essay will examine the water molecule in order to ascertain how it brought about Earth’s successful ecosystem and how important it is to us today. Each water molecule consists of one oxygen atom and two hydrogen atoms. The oxygen atom bears a slight electronegative charge while hydrogen possesses a more positive one. Because opposite charges attract‚ the
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repellant. Procedure #2: (for mosquito repellant) 1. First‚ clean the taheebo leaves and put under the sun to dry for 30 minutes to 1 hour. 2. After the leaves become slightly dry‚ put it on a pot with water and boil it for 45 minutes. 3. Then‚ using a strainer‚separate the leaves to the water. 4. Again‚ using mortar and pestle‚ grid the garlic until it became dull. 5. In a bowl‚ mix the taheebo extract‚ chopped garlic‚ cooking oil and essential oil. 6. After a several hours‚ separate the extract
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Water has polarity. Polarity is the uneven distribution of charge. Water has cohesion‚ adhesion‚ and heat capacity. Cohesion is the attraction between molecules of the same substances. Adhesion is the force of attraction between molecules of a different substances. Heat capacity is the amount of heat it takes to raise temperature of a substance. The experiment displayed shows water can have adhesion and cohesion. The hypothesis of this experiment is if a nonpolar substance is added to water
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Water is the most important substance in our evolution and our daily lives. Without water‚ life as we know it would not have been possible. This essay will examine the water molecule in order to ascertain how it brought about Earth ’s thriving ecosystem and how important it is to us today. Each water molecule consists of one oxygen atom and two hydrogen atoms. The oxygen atom (or the apex of the water molecule) bears a slight electronegative charge while hydrogen possesses a more positive
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The Uses of water in Living Things Topics I have chosen to cover: - Osmosis & Water potential - Condensation & Hydrolysis Reactions - Digestion – the importance of water - Blood and tissue fluid To emphasise the sheer importance of water in living things and to put the content of this essay in to perspective‚ I am firstly going to inform you that the human body is approximately 50-75% water. Without water our body would be unable to successfully perform the numerous complex reactions and
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Water Runs Dry – North American Water Crisis Collectively the United States is ranked as the greatest consumers of water worldwide; a startling fact for a country that cannot support its own unrivaled demands (Barlow‚ 2007). The United States is now crucially dependent on nonrenewable groundwater for a staggering 50% of its daily water usage (Barlow‚ 2007). In addition to such formidable numbers‚ citizens of the United States use and waste up 80-100 gallons or 454 liters of water per day (Perlman
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Drew Staples 6/12/14 Properties of water Question Does mixing water with other substances change it’s boiling point. Research The boiling point of a liquid is when the temperature causes the vapor pressure to be equal to the air. Air density will change waters boiling point. High altitudes give water a lower boiling point. Hypothesis If the water is less dense then it will boil faster and the boiling point will be lower. Materials 1 Pot A Sink A Stove 1 tablespoon of sugar 1
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Latent Heat of Vaporization of Water The Latent Heat of Vaporization of Water Aim: The aim is to determine the latent heat of vaporization of water by doing an experiment of boiling water. Theory: The latent heat of vaporization is the amount of energy that is required to transfer a kg of liquid from the liquid state to the gaseous state. This transformation appears‚ when water is heated. The temperature of the water keeps increasing‚ until it has
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Conserving Water Water is the most important part in each of our bodies. Our body is made up of 70% of water. Without water it would be hard to survive in this society. As important water is‚ there has been a shortage of water lately. For instance‚ we sometimes take water for granted and waste water by taking long showers‚ leaving the sink on and etc. Water has been a major issue in today’s society. There are families in this world who struggle from not having water. By conserving water‚ this will
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