indicate that the unk B tap water can be considered as hard water. INTRODUCTION Hard water is due to metal ions (minerals) that are dissolved in the ground water. These minerals include Ca 2+‚ Mg2+‚ Fe3+‚ SO42-‚ HCO3-. When this water evaporates or boils‚ the difficult to dissolve metal salts remain as a scaly residue. Hard water inhibits the effectiveness of soap and detergents. Calcium ions typically make the most significant contribution to water hardness. This is why hardness is measured
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In January of 1980‚ Cumberland Metal Industries (CMI) had developed a new product for the pile driving industry. Its new pad‚ made of tightly curled metal‚ had the potential to break into an industry where little or no innovation was taking place. The CMI product testing showed great efficiency gains over the current standard asbestos product. The existing competition consisted of small firms‚ few of which had the knowledge or resources to design and develop new products. CMI seemed on the verge
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Introduction The purpose of this experiment was to find the identity of the unknown compound #12. This was done both qualitatively and quantitatively. The qualitative observations were used to determine the functional group that was in the unknown‚ the quantitative results were used to determine the molar mass through Duma’s method. The types of compounds that were used in testing were all functional groups‚ Aldehyde‚ Ketone‚ Alcohol and‚ Ester. Functional groups are a portion of a molecule that
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equation‚ (c) net ionic equation for this neutralization reaction: KHSO4 (aq) + NaOH (aq) → ? 2. In each of the following cases‚ predict whether a reaction will occur‚ and‚ if so‚ write the net ionic equation for the reaction: a. ZnSO4 (aq) + BaS (aq) → ? b. NaHCO3 (aq) + Ca(OH)2 (aq) → ? 3. Assign an oxidation number to each atom in: a. Al2O3 b. HAsO42c. NaMnO4 4. Identify the reducing agent and the oxidizing agent in the following reaction: MnO4- + 5 Fe2+ + 8 H+ → Mn2+ + 5 Fe3+ + 4 H2O 1
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Determination of a Rate Law and Temperature Dependence of a Rate Constant By Marvin Coleman March 7‚ 2011 Abstract: From the shown calculations & graphical analysis‚ the experimentally determined rate law is rate = K[I-].969 [H2O2].991 and the experimentally determined activation energy is 59.50 kJ/mole. Introduction: The rate of a reaction varies at different temperatures and reactant concentrations. In this experiment‚ the orders and dependence of the rate constant of the products
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REASONS FOR CONDUCTING QUALITATIVE RESEARCH Given these distinctions and definitions of a qualitative study‚ why does a person engage in such a rigorous design? To undertake qualitative research requires a strong commitment to study a problem and demands time and resources. Qualitative research shares good company with the most rigorous quantitative research‚ and it should not be viewed as an easy substitute for a "statistical" or quantitative study. Qualitative inquiry is for the researcher who
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DETERMINATION OF FRUIT ACIDS BY TITRATION AND CALCULATION OF THE SUGAR/ACID RATIO It is the sugar/acid ratio which contributes towards giving many fruits their characteristic flavour and so is an indicator of commercial and organoleptic ripeness. At the beginning of the ripening process the sugar/acid ratio is low‚ because of low sugar content and high fruit acid content‚ this makes the fruit taste sour. During the ripening process the fruit acids are degraded‚ the sugar content increases and
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groups‚ etc. Qualitative research can explore common experience (Grounded Theory Research)‚ shared culture (Ethnography)‚ an environment (Case Study)‚ or an individual (Narrative Research). Both type of research ask research questions‚ focus on type of data‚ and have variables. Research Questions Research Questions are clear‚ concise‚ and arguable questions. A qualitative research question “explores a central concept or phenomenon” (Schreiber 2012). An example of a qualitative research question
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Qualitative Research Paper Shirley P. Davis EDD/581 July 14‚ 2014 Professor Elizabeth Ashley When researchers use qualitative methodologies‚ they are motivated to design their research on the basis of one of six research traditions: participatory action research (PAR)‚ phenomenology‚ ethnography‚ grounded theory‚ narratology‚ and consensual qualitative research (Hays & Wood‚ 2011). For the purpose of my action research project‚ I chose the PAR design primarily because the process requires participation
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Qualitative Versus Quantitative Research There has been a large amount of complex discussion and argument surrounding the topic of research methodology and the theory of how studies should push forward. Majority of this debate has centered on the issue of qualitative versus quantitative study. Different methods become popular at different social‚ political‚ historical and cultural times in our development‚ and‚ both methods have their strengths and weaknesses. The researcher and/or the culture
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