Calcium oxide‚ addresses the problem. It reacts in water to release calcium ions and hydroxide ions‚ which raise the pH of the soil.The soil which is too acidic will be neutralised by the lime which is alkaline. H2O + CO2 -> H2CO3 2SO2 + H2O + O2 -> 2H2SO4 4NO2 + 2H2O + O2 -> 4HNO3 H2CO3 + CaCO3 -> 2HCO3- + Ca+2 B) Sulfate of ammonia Sulfate of ammonia is an important source of nitrogen for plants. Chemical reaction and bacteria in the soil turns ammonium compounds into nitrates which are
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Investigating Projectiles Background: A projectile is an entity which only has the force of gravity acting upon it. A projectile can be cast‚ fired‚ flung‚ heaved‚ hurled‚ pitched‚ tossed and thrown. A projectile can be anything as long as it has initial horizontal velocity that is not equal to zero which has the acceleration due to gravity. Projectile motion happens when an object projected with a force stops putting influence on the object after its launched‚ hence the only force being gravity
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UNIT 9 CHEMICAL KINETICS 1. (c) mole 1–1 sec–1 The rate law for a reaction A + B →products‚ is rate = k [A]1[B]2. 7. Then‚ which one of the following statements is false ? (a) If [B] is held constant while [A] is doubled‚ the reaction will proceed twice as fast. (b) If [A] is held constant while [B] is reduced to one quarter‚ the rate will be halved (c) If [A] and [B] are both doubled‚ the reaction will proceed 8 times as fast. 2. Fro a first order reaction‚ a straight line
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Investigating Functionalism Functionalism is a theory about the nature of mental states. According to functionalism‚ mental states are functional states that are defined by their functional roles (causal relations to other things) rather than their intrinsic qualities. To illustrate the difference between the two ways of defining something‚ entities such as clocks (to display time) and calculators (to manipulate numbers) are defined functionally‚ whereas entities such as water (H2O) and gold (Au)
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Investigating Electromagnets Aim: The aim of the experiment is to investigate what affects the strength of an electromagnet. Hypothesis: The more coils and electricity the more powerful the electromagnet becomes. Prediction: When the voltage of electricity is increased I think that the nail will have more magnetism allowing it to attract more paper clips‚ because with more voltage going through the circuit‚ it can then make the electromagnet stronger. Variables: Independent The independent
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Investigating Factors that Affect the Rate of Reaction of the Decomposition of Hydrogen Peroxide Emilio Lanza Introduction- In this experiment‚ the rate of reaction‚ calculated in kPa sec-1‚ of the decomposition of hydrogen peroxide will be investigated to see how the change in concentration of hydrogen peroxide and the change in temperature affect the rate of reaction. The data will be collected by measuring the gas pressure. The product of Hydrogen Peroxide is oxygen in a gas state thus
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another; effect and reaction. The two different types of energy are kinetic and potential energy. Kinetic energy is the energy a moving object has because of its motion. The kinetic energy of a moving object depends on the object’s mass and its speed. The kinetic energy of a moving object can be calculated from this equation: Kinetic energy (in joules) = ½ mass (in kg) x [speed (in m/s)]² KE= ½ mv² In this equation ^‚ the symbol v represents speed. Example Find the kinetic energy of the ball
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is the kinetic energy of the entire system? KETOT = KEwheel+KEweight = (1/2)(I)(w2)+(1/2)(m*v2) =(0.5* v2)(m+1/2M) =0.5*(2.2^2)*(3+(.5*15)) J b) If the system started from rest‚ how far has the weight fallen? H = KETOT/MG = 0.5*(2.2^2)*(3+(.5*15))/(3*9.8) m c) What is the angular acceleration at this point? Remember that a = αR‚ or α = a/R Solve for acceleration by using vf2=vi2+2ax (vf=2.2‚ vi=0‚ x=(answer
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2013 “Reaction Classes and Pericyclic Reactions” ● 4 Lectures ● Recommended Texts: (i) J. March “Advanced Organic Chemistry”‚ p 839‚ `---Edn.‚ Oxford (W); Warren (2) Ch 34‚ 35. Syllabus 1) General principles (a) Reaction classes (i) Heterolytic (ii) Homolytic (iii) Pericyclic (b) Pericyclic Reaction Types 2) Electrocyclic Reactions (a) Definition and examples (b) Stereochemical aspects and the Woodward and Hoffmann rules 3) Cycloaddition Reactions (a) Definition
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Revolution”. The pre-industrial revolution period was characterized by a simple process of manufacture‚ small scale investment‚ local markets and small number of persons employed. All this led to close proximity between the manager and the managed. Due to personal and direct relationship between the employer and the employee it was easier to secure cooperation of the latter. Any grievance or misunderstanding on the part of either party could be promptly removed. Also‚ there was no interference by the
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