Experiment 1: APPLICATION OF STATISTICAL CONCEPTS IN THE DETERMINATION OF WEIGHT VARIATION IN SAMPLES LEE‚ Hyun Sik Chem 26.1 WFV/WFQR1 ------------------------------------------------- Nov. 23‚ 2012 A skillful researcher aims to end his study with a precise and accurate result. Precision refers to the closeness of the values when some quantity is measured several times; while accuracy refers to the closeness of the values to the true value. The tool he utilizes to prevent errors in precision and
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the sum of the components of the series. In this experiment‚ you will measure the temperature change of two reactions‚ and use Hess’s law to determine the enthalpy change‚ ΔH of a third reaction. You will use a Styrofoam cup nested in a beaker as a calorimeter‚ as shown in Figure 1. For purposes of this experiment‚ you may assume that the heat loss to the calorimeter and the surrounding air is negligible. OBJECTIVES In this experiment‚ you will • Use Hess’s law to determine the enthalpy
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Iron Sand Project in Indonesia (Brief Version) Nomis Lau‚ MSc Formation of the Beach Iron Sand Deposit (4 shots) 1) Before eruption‚ green plantation lay peacefully 2) The volcano erupted‚ the lava spurted out‚ on the volcano; while the river was winding quietly scattered around the slope‚ slid down the plain; and towards the sea. headed to the sea along the river. 3) Countless years passed‚ lava weathered and eroded on 4) At the seafront‚ the mineral debris repeatedly
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description of Electric Iron introduction: An electric iron is a small appliance‚a handheld piece of equipment with a flat‚ roughly triangular metal surface that‚ when heated‚ is used to press clothes to remove creases. Ironing works by loosening the ties between the long chains of molecules that exist in polymer fiber materials. With the heat and the weight of the ironing plate‚ the fibers are stretched and the fabric maintains its new shape when cool. description: The electric iron must have a design
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Polytechnic University of the Philippines College of Science Department of Food Technology MOISTURE DETERMINATION (Experiment no. 1) Bea Dessa T. Co Maybelle Tolete Ian Francia Glyceryl Pangan BSFT 3-1D FOTE ///????? Food Analysis Prof. Kennedy Bongon Introduction Moisture content is one of the most commonly measured properties of food materials. It is important to food scientists for a number of different reasons: Legal and Labeling Requirements. There are legal limits to
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Determination of KHP – Acid - Base Titration For determining purity of unknown KHP‚ acid – base titration was used. Molarity of titrant in this case NaOH was standardized as 0.04958(±0.00011) M. Purity of unknown KHP was calculated as 35.88(±0.16) %. • Introduction Acid – base titration is typical method of determining unknown figures. Acid – base titration means that by using neutralization between acid and base. Abrupt changing of pH says whether procedure is done or not. pH indicators
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This essay is about determination. My purpose in writing is to inspire you to be a person of determination.... Determination is defined as a: the act of deciding definitely and firmly; the result of such an act of decision or the definition I like even better: b : the power or habit of deciding definitely and firmly The POWER of deciding definitely and firmly. So then we can say that Determination is Power....the power to overcome the obstacles in your path...the power to complete the task.
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Metals and Rusting Iron Alquero Rollon Title “ The Effect of Various Metal Activity (Zinc (Zn)‚ Magnesium (Mg)‚ and Copper (Cu)) in the Color of Rainwater and Amount of Rust in the Iron Nail “ Hypothesis If the type of metal that has the highest activity will be used ‚ then there will be the least amount of rust found in the nail and the color of the rainwater would be the lightest. Independent Variable • Types of metals used in wrapping Title: “ The Effect of Various Metal Activity (Zinc
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Towards the end of Bernhard Schlink’s best-known novel‚ The Reader‚ the narrator is pondering his future after taking his state exam in law. He has just seen his former lover‚ Hanna Schmitz‚ convicted of war crimes: she had been a concentration camp guard‚ something he hadn’t known when she seduced him as a 15-year-old boy. None of the roles he saw played out in court appeals to him: ‘Prosecution seemed to me as grotesque a simplification as defence‚ and judging was the most grotesque oversimplification
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Determination of pKa James McDuffie ABSTRACT: In this lab‚ the pKa of unknown solution #4 was measured Introduction: This lab focused on the equilibrium constant‚ Ka. Ka is associated with chemical properties of acids. The equivalence point will be reached once the moles of OH- equal the moles of HA and once this point is reached‚ the PH changes very quickly. With the results‚ a titration curve should be produced. Experimental Section Materials and Methods: A buret with NaOH solution
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