1. Define science – Science is the development of concepts about the natural world ‚ often by using the scientific method 2. Define multicellular organism - are those organisms containing more than one cell‚ and having differentiated cells that perform various functions. 3. Identify the 3 domains of living things. Which domains include one-celled organisms with no nucleus? a) Organized‚ Homeostatic & Reproduce. b) Bacteria & Archaea 4. Modern taxonomists (scientists
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Review paper. Catalysts analysis for MSW pyrolysis and gasification Tursunov Obida‚ Khairuddin Md Isaa‚ Dr. Ong Soon Ana aSchool of Environmental Engineering‚ University Malaysia Perlis UniMAP‚ Arau 02600‚ Perlis‚ Malaysia Abstract MSW pyrolysis and gasification are the possible alternative to the direct use of fossil fuel energy. MSW‚ a CO2 neutral source of renewable fuel‚ can contribute to the demand for heat‚ electricity and synthesis gas (syngas). Nevertheless‚ there are inefficiencies in
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THE CHEMISTRY OF LIFE (Review 1-7) I. Basic Chemistry A. Elements 1. Definition- an element is a substance composed of a single type of atom 2. Major elements of the human body 3. Trace elements of the body B. Atoms 1. Definition- the atom is the smallest part of an element which cannot be broken down further by ordinary chemical means. Atoms are composed of protons‚ neutrons and electrons. 2. Particles that make up atoms
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charge and some have a positive charge. Citric Acid Citric acid is a weak organic acid with the molecular formula C6H8O7‚ which means a molecule of the acid contains six carbon atoms‚ eight hydrogen atoms‚ and seven oxygen atoms. When it is dissolved in water‚ it partially ionizes to yield three H+ ions (hydrogen atoms which are missing their electron) and a C6H5O7(3-) ion (the 3- means that it has three extra electrons.) The resulting solution is called an "electrolyte." Citric acid is an acid; albeit
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g/cm 3 0.6603 g/cm 3 0.716 g/L 0.7914 g/cm 3 1.27 g/cm 3 −119 79 Decompose 69 86 −95 −182 −94 86 −164 65 Decompose Inorganic Substances Name *Density @ STP Melting Point (°C) Boiling Point (°C) Chlorine Hydrogen Hydrogen chloride Hydrogen sulfide Nitrogen Nitrogen monoxide 3.21 g/L 0.0899 g/L 1.640 g/L 1.54 g/L 1.25 g/L 1.34 g/L 1.43 g/L 2.532 g/cm 3 2.165 g/cm 3 2.92 g/L 1.00 g/cm 3 −101 −35 −259 −115 −85 −253 −85 −61 −210 −164 −218 851 801 −73
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13‚ 8‚ 10 Save Question 2 (2.7 points) When aluminum metal is dissolved in perchloric acid‚ aluminum(III) perchlorate and hydrogen gas are formed. In the balanced equation for this reaction‚ what is the coefficient of hydrogen gas? Question 2 options: 3 2 1 4 5 Save Question 3 (2.7 points) The coefficients of calcium hydroxide and hydrogen‚ respectively‚ in the balanced equation for the reaction of calcium with water are Question 3 options: 1 and 3. 1 and 2
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nitrogen from the air with hydrogen from natural gasses like methane into ammonia. This process is a reaction that ’s reversible and the production of ammonia is exothermic.
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liquids are called an inorganic makeup of our body. Liquid takes form of its container. * Gases: no definite shape‚ carbon dioxide‚ oxygen‚ hydrogen gas‚ and nitrogen gas. Elements: unique substances in our body that cannot be broken down into simpler substances by ordinary means. Four elements that compose our body. * Carbon: * Hydrogen: * Oxygen: * Nitrogen: Make up 96% of our bodies weight. Atoms Defined as the smallest non destructible parts of any element that
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acidic (pKa ~ 20) α-hydrogen of the ketone. This acidity is due to the stability of the resonance structures of the corresponding enolate ion that forms upon dissociation. When the hydroxide is able to subtract a hydrogen atom‚ a carbanion is formed. This carbanion is a very strong base and is able to attack the chlorine thus taking one of the chlorine atoms. The introduction of one chlorine atom catalyzes the attack of another hydroxide molecule on the remaining α-hydrogens of the ketone. The subsequent
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Chemistry Project on Evaporation of Liquid Acknowledgement I would like to show my gratitude to my Chemistry Teachers Ms Seema More without whose support and encouragement this project could never have have taken the present shape . I would also like to thank my lab incharge Mr. Kakde For helping Me out During The Practical Part Of This Project. Aim Acknowledgment I am are greatly thankful for the cooperation and help from the Community Science Center (CSC) authorities and the Chemistry lab
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