Hydrogen Producing Bacteria was incubated in a complete - mix digester with work volume 1.7 L‚ seeded with sludge obtained from the local sewage treatment plant. Each liter of feed medium was composed of the following : 7 g of glucose‚ 1 g NaHCO3 ‚ 500 mg of NH4Cl ‚ 250 mg KH2PO4 ‚ 250 mg K2HPO4 ‚ 320 mg of MgSO4 • 7H2O ‚ 50 mg of FeCl 3 ‚ NiSO4 32 mg ‚ 50 mg CaCl2‚ Na2BO7 7.2 mg H2O ‚ 14.4 mg (NH4) 6MO7O24 H2O ‚ 23 mg of ZnCl2 ‚ 21 mg CoCl2 H2O ‚ 10 mg CuCl2•2H2O and 30 mg of MnCl2•4H2O . The reaction
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Kinetic Energy: Consider a baseball flying through the air. The ball is said to have "kinetic energy" by virtue of the fact that its in motion relative to the ground. You can see that it is has energy because it can do "work" on an object on the ground if it collides with it (either by pushing on it and/or damaging it during the collision). The formula for Kinetic energy‚ and for some of the other forms of energy described in this section will‚ is given in a later section of this primer. Potential
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The Chemistry of Decomposition Decomposition is defined as the biological and chemical changes a body undergoes after death. It is the decay of tissues and structures. There are two types of decomposition: abiotic and biotic. Abiotic decomposition is defined as the degradation of a substance by chemical or physical processes; such as hydrolysis‚ reduction‚ or oxidation. Biotic decomposition is the metabolic breakdown of materials into simpler components by living organisms. This is typically
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reaction 0.5M 134 seconds 1.0M 79 seconds 1.5M 59 seconds In this part‚ we have concluded that as concentration increases‚ the reaction rate also increases. Part (D) “The effect of cupric sulfate solution enhanced the rate of decomposition of hydrogen peroxide.” Chemical equilibrium is the state of constant composition attained when opposing reaction rates become equal. There is an essential relationship between reaction rates and chemical equilibrium‚ one that we can describe quantitatively
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Tro’s Chemistry Chapter 13 – Chemical Kinetics Page 1 of 13 Acknowledgements: Many of the images are adopted from Tro’s textbook‚ the only purpose of which is to enhance student learning. Key terms‚ concepts‚ skills: Refer to pp 599 – 601. Review questions: 3 – 24. Suggested problems: 25‚ 27‚ 33‚ 39‚ 43‚ 53‚ 57‚ 59‚ 69‚ 73‚ 75‚ 81‚ 93‚ 103. 13.1 & 2 Introduction to the Rate of a Chemical Reaction • kinetics is the study of the factors that affect the speed of a reaction and the mechanism by
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AIM: To carry out a lab experiment to decompose a carbonate using heat‚ also to carry out appropriate tests for the formation of products as a result of this decomposition. DISSCUSION: Carbonates are decomposed by heat into the corresponding oxides and carbon dioxide. The temperature of decomposition depends upon the activity of the metal; that is to say‚ the more active the metal‚ the more stable is the carbonate. Thus‚ the carbonates of sodium and potassium are stable at the highest temperature
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The Decomposition of Potassium Chlorate Hypothesis: Potassium chlorate decomposes into potassium chloride and oxygen gas‚ which means that when the glowing splint is inserted into the test tube‚ the flame will have enough fuel to fully reignite the splint. When the manganese dioxide is added‚ this will increase the rate of the production of oxygen in the reaction‚ without affecting the state of the manganese oxide. Materials: Test tube Retort stand Bunsen burner Scoopula Flint sparker 2cm of potassium
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Hydrogen has a high specific energy‚ high flame speed‚ wide range of flammability‚ and clean burning characteristics which suggest a possibility of high performance in internal combustion engines (ICE). These attributes have been realized for more than half a century since the onset of hydrogen engine development. In the early 1990s‚ FSEC conducted research on using hydrogen in an ICE. This work resulted in the development of a mixed fuel called HYTEST. Today‚ automobile manufacturers and DOE continue
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March 17‚ 2013 Name : Ryan annasdass arokiasamy ID : 1206875 Group Members : Chan Pei Qie‚Chong Ven Yen Name : Ryan annasdass arokiasamy ID : 1206875 Group Members : Chan Pei Qie‚Chong Ven Yen experiment 19 kinetics : the study of a chemical reaction experiment 19 kinetics : the study of a chemical reaction Results Part A [I-] / mol dm-3 | [S2O82-] / mol dm-3 | [S2O32-] / mol dm-3 | Time /s | Rate of I2 formation / mol dm-3 s-1 | 0.2 | 0.2 | 0.01 | 1.25 | 0.1600 | 0.2 | 0.15
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<i>1. State the five assumptions of the Kinetic-Molecular Theory of gases.</i><br><br>a) Gases consist of large numbers of tiny particles. These particles‚ usually molecules or atoms‚ typically occupy a volume about 1000 times larger than occupied by the same number of particles in the liquid or solid state. Thus molecules of gases are much further apart than those of liquids or solids.<br><br>Most of the volume occupied by a gas is empty space. This accounts for the lower density of gases compared
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