Chemistry Internal Assessment 2011 Candy Au Introduction The reaction between zinc and copper (II) sulphate is endothermic. If an excess of zinc powder is added to a measured amount of aqueous copper (II) sulphate in a calorimeter and the temperature change is recorded over a period of time‚ the enthalpy change of the reaction can be experimentally determined. Assumption 1. Mass of H2O in 100cm3 of CuSO4 solution is 100g 2. Specific heat of solution is 4.18 kJ kg-1 K-1 which is the
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Conditions under which decisions are made are as follows: Certainty This is when individuals are informed about a problem‚ alternative solutions are obvious and the likely of each solutions are clear. With this condition you have everything under control as you know that should something happen‚ you already have measures in place to take care of that situation. An example is in the case whereby you are involved in a car accident‚ say when you take insurance for your car you add the option of being
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To find the uncertainties associated with this lab we used the direct method. For the mass‚ we took our smallest weight that we added and used half of that as our uncertainty. That means that our mass had an uncertainty of ±1g. Our angle uncertainty was half of a tick mark or ±0.50ͦ. Calculations Figure 1: Free-body Diagram Figure 2: Force Diagram To find the third force we use
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masculinity-femininity dimension (MF) and uncertainty avoidance (UA). Keywords: Canada‚ Romania‚ Cultural Dimensions‚ Hofstede‚ individualism- collectivism (IC)‚ masculinityfemininity (M F)‚ uncertainty avoidance (UA)‚ national values. Introduction To begin‚ the cultural dimensions used throughout this research consist of three out of five dimensions created by Hofstede being the individualism- collectivism (I-C) dimension‚ the masculinity-femininity dimensions (M F)‚ and uncertainty avoidance (UA). They are
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is to discuss the controversial effects of formal planning on the performances of firms that were evidenced in a range of empirical studies‚ the influence it has on newly established ventures and its applicability at the times of environmental uncertainty. Camillus (1975) states that “companies that plan formally perform better than those which plan informally”‚ and he also believes that by formalising plans‚ the firms’ performances can be improved. An important feature of formal planning is strategic
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Human and Ecological Risk Assessment Ecology and Wildlife Risk Evaluation Analysis ENV/420 This analysis of case studies from Los Alamos National Laboratory‚ and the case study to predict the effects of pesticides on aquatic systems and the waterfowl that uses them. Comparing the two processes of these case studies‚ along with analysis of the assessments. Describing the case study on the
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⌧ISO/IEC 17025:2000 ⌧ISO 9001 and 17025 ⌧Conformity Assessment and ISO Standard ⌧Composition of the Standard ⌧Assessment for Accreditation of 17025 ⌧Steps for Building a Laboratory Management System ⌧(Assuring of the Quality of Test Results) ⌧(Uncertainty of Measurement) ISO/IEC 17025:2005 （Romanian version : SR EN ISO/CEI 17025:2005） Title: “General Requirements for the Competence of Testing and Calibration Laboratories” ISO : International Organization for Standardization IEC : International
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Uncertainties exist in three forms: Supplier‚ Process and Demand. While uncertainties are great challenges to any organization‚ the risks and impacts involved can be mitigated through various ways. Careful selection of suppliers based on compatibility‚ performance record and degree of alignment of objectives and goals‚ can reduce supplier uncertainty in terms changes in product quality or product defaults. This brings us back
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In Evening Hawk‚ Robert Penn Warren creates a mood of uncertainty as he comments on the passage of time. The passage of time is an inevitable process and despite all efforts everyone eventually dies. As humans‚ it is hard to understand this process and one cannot predict when their time is coming to an end. Ultimately‚ Warren uses diction‚ symbolism‚ and imagery in order to explore this concept and showcase the uncertainty it brings about. In the first stanza of the poem‚ Warren uses vivid imagery
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“embracing uncertainty” (10). Most scientists would be reluctant to show uncertainty in any step of the scientific method. A majority of those who would embrace uncertainty would be the most ambitious. As a result‚ scientific research into the unknown would be done by the most ambitious. Furthermore‚ Barry cites Einstein who had uncertainty “until his predictions were tested” to show that even an ambitious scientist like Einstein faced uncertainty (17-18). The reason there is uncertainty in scientific
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