Experiment #6: Colorimetric Determination of pH Almira‚ Faerie Carleen Lucile L. Gallardo‚ Charlotte O. Group #6‚ Chemistry 18.1‚ MHEG1‚ Ma’am Arlou Angeles September 23‚ 2013 I. Abstract The acidity of the four unknown solutions were determined with the use of colorimetry using McIlvaine’s buffer solutions varying in proportion of its constituents (disodium phosphate and citric acid). These buffer solutions were subjected to the addition of corresponding pH indicators and the variation of
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Science WEEK IN CLASS 1 Tutorial 1 2 Tutorial 2 Derive the following from week 1 task 2 and task 3 Topic-Problem-Purpose-Questions HOME TASK 1. Decide group member 2. Decide topic (write Background of Study and Problem Statement) 3. Find two (2) journal papers 1. In class activity (Topic-Problem-PurposeQuestions) to be submitted on Friday before 5pm 2. Find two (2) journal papers For example‚ Topic Youth suicidality Purpose of the activity: Problem The rising
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Activities and Learning Exercises Ch 3 Instructions for Task Analysis Assignment Your job is to formulate a training objective and write a task analysis of a skill; for example‚ how to eat a sandwich cookie. Remember this is an example‚ but you should assume that your trainees are familiar with what a sandwich cookie is. Your job is to teach them how to go about eating one or can they really eat just one? First‚ compose a goal statement/learning objective for your training. Next‚ complete your
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Determination of rate of photosynthesis INTRODUCTION Photosynthesis is the major process by which light from the sun is captured by plants‚ algae and some bacteria to produce energy. It is a process in which light energy is converted into chemical energy which is then stored in sugars. Photosynthesis occurs in two stages‚ light-dependant reactions and light-independent reactions. In light-dependent reactions the chlorophyll traps light energy which is then used to excite electrons and split water
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CHEM 1105 Experiment 4: Determination of a Chemical Formula Introduction When atoms of one element combine with those of another‚ the combining ratio is typically an integer or a simple fraction. The simplest formula of a compound expresses that atom ratio. When two or more elements are present in a compound‚ the formula still indicates the atom ratio. To find the formula of a compound we need to find the mass of each of the elements in a weighed sample of that compound. For example‚
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(6) Determination of ash content Aim: To determine the ash content in 5 samples of milk Principle: This experiment wills comparison between all samples. We will weight three times. First type the weight of crucible. The second is crucible and the sample the last about the weight of ash after removing from furnace. Apparatus: 1. clean crucibles 2. Analytical balance 3. Clean tongs 4. Tripod 5. Bunsen burner 6. Silica triangle Instruments: 1. Furnace Procedure: 1. Clean
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Critically evaluate the claim that “the ordering of Maslow’s hierarchy of needs is accurate”. Refer to relevant theoretical and empirical evidence to support your argument. Maslow’s hierarchy of needs is one of the most important theoretical systems in humanistic psychology. However‚ the ordering of this system is not accurate and this is evidenced by various criticisms of Maslow’s conception of ‘self-actualisation.’ Individuals do not need to satisfy the lower needs in order to reach self-actualisation
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Gravimetric Determination of Calcium ABSTRACT Determining the mass of a pure compound is a method of a gravimetric analysis. One of the gravimetric analyses is the precipitation; it is a method of separating the analyte from the unknown sample as a precipitate where it will be filtered and converted into a known composition that can be weighed to determine its mass (Skoog et al‚ 2013). Determining the mass of calcium by using gravimetric analysis was the objective of the experiment. A 25 mL
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DETERMINATION OF THE HEAT OF SOLUTION BY THE VANT HOFF ISOCHORE METHOD Jan Vincent Arafiles‚ Merry Joy Arzaga‚ Anne Louise Ayson‚ Lovely Jenny Buenaflor Group 2 3A-Biochemistry chem401 laboratory ABSTRACT Thermodynamic values can be determined using the Vant Hoff isochore method. This method entails the use of equilibrium systems to determine the change in enthalpy of the solution‚ which can b related to the change in internal energy of the solution. The van ’t Hoff isochore relates
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Determination: the ability to strive for and accomplish a set goal. Determination is one of the most important trait anyone can have. It helps you succeed and overcome any boundaries thrown your way. Determination is so significant because without it many feats wouldn’t have been accomplished. It can help people succeed no matter what obstacles they have to face. First‚ if no African-American had revolted against the status quo and been determined to end all the injustices that African Americans
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