THE 4 QUALITIES OF GOOD WATER by Dr. Robert O. Young There are many measurements of water‚ but the most important for determining the best water to drink are‚ the pH‚ oxidative reduction potential—or energy potential/activity—molecular structure‚ and purity. Science has helped us to determine that the best measurements for our drinking water are the pH and purity‚ but little understood is the importance of the molecular structure of water. Assuming that most waters that humans are drinking
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Tick (v) if it is a true statement. Chapter 2 Cell Structure and Cell Organisation 1. The cell is the basic unit of life for all organisms. 2. All cells have the same shape and size. 3. All cells have a plasma membrane‚ nucleus and cytoplasm. 4. Protoplasm consists of a plasma membrane and nucleus. 5. The nucleus consists of chromosomes and a nucleolus. 6. Organelles that are found in the cytoplasm of a cell include the nucleus‚ vacuole‚ endoplasmic reticulum‚ mitochondria and Golgi apparatus.
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1. Which of the following statements about heat is false? A) If heat flows into a system‚ the extra energy of the system appears in the form of internal energy. B) A hot object possesses more heat than a cold object. C) If the system and surroundings are in thermal equilibrium‚ there is no heat flow between them. D) A process in which heat flows out of a system is said to be exothermic. E) Heat is a form of energy flow. B is false. If you compare a cup of water at 25oC and a bath tub of
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Eating Too Much Meat Will Kill You Bill Cosby once stated‚ “Did you ever see the customers in health-food stores? They are pale‚ skinny people who look half dead. In a steak house‚ you see robust‚ ruddy people. They’re dying‚ of course‚ but they look terrific.” On average‚ Americans consume about 8 oz. of meat a day‚ twice the amount as the rest of the world; about one-sixth of the total meat consumed‚ U.S being less than one-twentieth of the population. Meat is generally delicious‚ contains rich
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Chapter 1 INTRODUCTION 1.1 Background of study Macrobrachium rosernbergii‚ also known as the giant river prawn is much known as a species in the Southern and Southeastern Asia‚ Western Pacific Island and Northern Oceania. This species lives inland of the freshwater areas during adult stage while the larvae needs brackish water and usually found in estuaries (Galitzine and Morgan‚ 2009). This species of prawn is a tropical living animal which needs warmer temperatures more than 18°C for growth
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Effect of Nutrients on the Growth and Photosynthetic Ability of a Hypersaline Diatom ------------------------------------------------- Murdoch University Caitlin May: 30981943 Effect of Nutrients on the Growth and Photosynthetic Ability of a Hypersaline Diatom ------------------------------------------------- Murdoch University Caitlin May: 30981943 Introduction Recently there has been an increase of interest in the industrial applications of microalgae‚ in particular diatoms‚ for producing
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vapours(ii)Crackling sound(iii)Yellow when salt and white when cold(iv)Colourless gas giving pungent smelling gas(v) No characteristic change | Presence of NO3-‚ NO2-Presence of nitrates of lead and bariumPresence of Zn2+Presence of NH4+Absence of nitrate‚ nitrite‚ zinc and ammonium ions | 3 | Solubility: a) In water b) In dil. HCl | SolubleSoluble in dil. HCl but insoluble in water | Water soluble saltsPresence of CO32- | 4 | Flame test:A paste of the salt was made with few drops of con. HCl and
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CHEMICAL EQUILIBRIUM I. Introduction In a chemical reaction‚ when reactants are mixed together in a reaction vessel‚ the whole of the reactants do not get converted into products. After some time‚ there will come a point when a fixed amount of reactants will exist in harmony with a fixed amount of products; neither amount will change anymore. This state is called chemical equilibrium (Birk‚ 1994; Jones‚ 1987; LeMay‚ 2002). There are three characteristics of a system in chemical equilibrium: a
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INVESTIGATION 12.A Target Skills Determining the reactivity of various metals Testing Relative Oxidizing and Reducing Strengths of Metal Atoms and Ions By observing whether reactions occur between solid metals and metal ions in solution‚ you can determine the order of oxidizing and reducing agents according to strength. Question How can the presence or absence of a reaction provide information about the relative strength of oxidizing and reducing agents? Safety Precautions
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Sustainability has been defined as “meeting the needs of the present generation without compromising the ability for future generations to meet their own needs”. Sustainable development comes down to three core features of environmental protection‚ economic development and social progress. To improve sustainability around the world people have been encouraged to reduce their ‘footprint’ on the planet. There are key strategies to reduce the human ‘footprint’ on the globe‚ some of these are recycling
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