Chemical Periodicity ------------------------------------------------- ABSTRACT The experiment chemical periodicity shows the properties and reactions belonging to group IA‚ IIA‚ and IVA. Proper procedures and observations were done to determine the solubility‚ physical state‚ color‚ and appearance of the compounds namely Li2CO3‚ Na2CO3‚ K2CO3‚ CaCO3‚ and BaCO3. The results shows that Li2CO3‚ Na2CO3‚ K2CO3 were soluble in water‚ while MgCO3‚ CaCO3‚and BaCO3 were not soluble. All of these compounds
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Chemical Bonding Chemical compounds are formed by the joining of two or more atoms. A stable compound occurs when the total energy of the combination has lower energy than the separated atoms. The bound state implies a net attractive force between the atoms ... a chemical bond. The two extreme cases of chemical bonds are: Covalent Bonds Covalent chemical bonds involve the sharing of a pair of valence electrons by two atoms‚ in contrast to the transfer of electrons in ionic bonds. Such bonds lead
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used average of the companies that is specialized for 21`only. Based on all above judgements‚ calculated cost of equity is 15.37%‚ and WACC is 12.01%. Calculation of NPVs Table 2 and Table 3 show the next 10 years cash flow of the Collinsville Plant without and with laminated graphite electrodes. Using the calculated WACC as the discount rate‚ the NPVs results are approximately -1.1 million without laminated electrodes and 10.3 million with laminated electrodes. According to the NPV calculated
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leafy object. Trees and flowers or generally‚ they are known as plants. A very good morning to all! Today‚ I would like to enlighten everyone in this room about the benefits of plants. Why do you see them everywhere you go? How do they benefit us? Well‚ the floras are a very crucial object to this planet’s survival and all its living things. However‚ today‚ I would like to focus on the benefits if plants towards us‚ human beings. Plants provide oxygen for us‚ supply us with materials to be used on
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The hypothesis If a chemical reaction occurs‚ then there will be indicators of a chemical change‚ was supported throughout this experiment. Throughout this experiment there were several reactions that took place‚ and an indicator of such chemical reactions could be seen throughout each one. The first piece of identifiable evidence was present in the first step‚ which was when copper (II) nitrate and sodium hydroxide were combined. When stirred‚ a blue precipitate formed at the bottom of the test
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changes are used to describe matter. A property is a trait of matter‚ when that sample of matter is in a fixed state. There are two different types of properties: physical properties and chemical properties. A change is something that alters the properties of a substance. There are two types of changes: chemical changes and physical changes. A physical property is a property that can be observed without changing the makeup (or composition) of a substance. Some examples of a physical properties
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PLANT LAYOUT Introduction – Plant layout is very essential and needs consideration and attention from the very beginning so as to avoid subsequent problems. Though one can think of several layouts but the best one is obviously the one‚ which is both very systematic and cheap. It is arrangement of machines‚ scientific use of work area‚ easy and convenient transport system‚ easy sorting out of materials and processing different parts. Since the area has already been selected
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Plant Adaptation Investigation Observations Samples of plants were obtained during the campus tour. In order survive in the harsh climate of deserts‚ plants must adapt in function‚ reproduction‚ support‚ and defense. Although plants on campus are watered frequently‚ they live in a mostly xeric environment. Three types of cacti were observed: organ pipe‚ prickly pear‚ and saguaro. The organ pipe contains no leaves and has narrow stems that carry out photosynthesis and store water. Neither the
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Drugs and Chemicals to be Avoided in G6PD Deficiency Drugs to be Avoided in G6PD Deficiency There are different types of G6PD deficiency‚ an individual need to know the type of G6PD that they have inherited because each types of G6PD deficiency react to drugs differently and some may not react to some of the drugs and chemicals listed here. This is not a comprehensive list there are drugs and chemicals that may also be harmful to those with G6PD deficiency that are not on this list an individual
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003 10 0.0008 0.01 Ratio = 1.2 Calculations: Conclusion: Answer the following questions in complete sentences‚ giving detailed explanations and support for each of your answers. 1. Explain in your own words what it means for a chemical system to be in the state of dynamic equilibrium. All reactions are able to reach equilibrium but only if they it happens in closed systems. Dynamic equilibrium is a state of balance where forward and reversed reactions happen at the same time.
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