Hess Law Lab DESIGN Aspect 1: Problem: What is the molar enthalpy of formation of magnesium oxide? Variables: Manipulated: None Responding: None Controlled: Isolation of calorimeter‚ concentrations of substances involved. Aspect 2: Background Information: Assumptions: Specific heat capacity of water‚ we assume that the acid has the same qualities as water including heat capacity‚ and we assume the enthalpy of formation for magnesium oxide from the data booklet for theoretical
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Factors that determine investment: 1. Marginal efficiency of capital:- The marginal efficiency of capital is called the expected return of capital or expected rate of profit on an investment. PV = R + R + R + …………… + R (1+i) (1+i) (1+i) (1+i) Keynes define the marginal efficiency of capital as “ MEC is being equal to that rate of discount which make the present value of
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Determining Leadership Styles BD LDR/531 30 August 2010 Determining Leadership Styles One of the most important tasks any business leader must undertake is a personal assessment. An honest inventory of skills‚ strengths and weaknesses of a business leader can give insight into those areas that need improvement as well as those that can be accepted
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"Heredity determines personality." (a) Build an argument to support this statement. (b) Build an argument against this statement. Personality is defined as the sum total of beliefs‚ behaviors‚ attitudes and values that distinguishes an individual. Each of us has unique personalities which distinguish us from the others. Even twins who look alike and are brought up in the same environment‚ differ in personalities. A number of factors determine a person’s personality. These include environment and
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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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their country. However‚ one must keep in mind that a state will be affected by the leaders choices and actions. It has been stated that‚ “ Leadership determines the fate of a country.” Spain has dealt with the outcomes of Phillip II leadership tactics. Phillip II inherited Spain‚ the Low Countries from his father Charles V. Phillips leadership determine the fate of Spain with being his orders he sent out to his people. He wanted to wipe out Protestantism and this led to his sister’s introduction to
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Chapter 1 Chemical Reactions and Equations Q.1. Why should magnesium ribbon be cleaned before burning in air ? Ans: Magnesium ribbon is a very reactive metal. When stored it reacts with oxygen to form a layer of magnesium oxide on its surface. This layer of magnesium oxide being a stable compound prevents further reaction of magnesium with oxygen. The magnesium is cleaned before burning in air to remove this layer so that the metal can be exposed to air properly. Q.2. Write the balanced
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Utilitarianism is a consequentialist theory‚ which means that it judges the morality of an action based on the consequences that follow from it rather than on external moral duties. Philosophers who adhere to utilitarianism regard the maximisation of utility as the key determent for understanding whether an action is right or not . In this essay I will argue that the amount of utility produces by an action is not an ideal way of determining its morality. This will be done by firstly clarifying the
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CBSE TEST PAPER-03 CLASS - X (Chemical Reactions and equations) 1. Take about 5 ml of dil. HCl in a test tube and add a few pieces of fine granules to it. Which gas is evolved? (a) Chlorine (b) Hydrogen (c) HCl (d) Nitrogen 2. Dissolving suger is an example of(a) Physical change (b) Chemical change (c) Redox Reaction (d) None of these. 3. Heat is evolved diving (a) Endothermic Reaction (b) Displacement Reaction (c) Combustion Reaction (d) Combination Reaction 4. Which of the following is not a balanced
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Kinetics Kinetics 6.1 Rates of reaction 6.2 Collision theory 6 16.1 Rate Expression (AHL) 16.2 Reaction mechanism (AHL) 16.3 Activation energy (AHL) 6.1 Rates of reaction 6.1.1 Define the term rate of reaction. 6.1.2 Describe suitable experimental procedures for measuring rates of reactions. 6.1.3 Analyse data from rate experiments. © IBO 2007 Figure 601 An explosion is a quick reaction D ifferent chemical reactions occur at different rates (i.e. speeds)
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