Chem-102 Lab Dr. Sobhi Experiment #3: Spectrophotometric Determination of Tartrazine Purpose The objectives of this lab include- illustrating the use of the spectrophotometer in chemical analysis‚ and generating a standard‚ or calibration curve‚ then using that curve to determine the value of an unknown substance. The spectrophotometer is one of the most powerful tools used in chemistry to find the concentration of substances in solution. It compares the colors of a known and an unknown solution
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Since there are many different definitions of handedness‚ the results of my experiment could be significantly affected by my choice. For the definition that I will use in this case‚ handedness is the hand that one prefers and performs better in use. Because the two most common definitions were the hand that one prefers‚ or the hand that one prefers to use‚ I made my own definition of combining together. In this experiment‚ handedness has to match both of the conditions of preference and performance
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Osmosis Experiment Diana Arrowood Grand Canyon University BIO-100L Biology Concepts September 16‚ 2011 Osmosis Experiment Directions Use the information below to complete the Osmosis Experiment. Materials 1 fresh baking potato Water Salt Four small containers (i.e.‚ drinking cups or clear glasses) A metric ruler Methods and Procedure 1) Place 1 cup (236 ml) of water in each of the 4 containers. In 2 of the containers‚ add 1 tablespoon (14.8 ml) of table salt and mix well until
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Heart Rate Experiment Introduction: The heart rate measures the contractions of your heart and is a requirement for life. The heart uses four chambers. The right and left-lower chambers are called ventricles‚ and right and left-upper chambers are called atria. These four chambers complete two cycles that replenish the tissues with oxygen and get oxygen from our lungs. The heart rate is measured in beats/ minute and a “beat” is when the lower chambers are (two ventricles) contract. This
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y is the distance from the neutral axis to the point of interest and I is the moment of inertia. 2.0 OBJECTIVES 2.1 EXPERIMENT 1 To investigate‚ for a simply supported beam carrying a central point load‚ a) The relationship between the deflection and the applied loads b) The effect of variations in length and cross sectional dimensions on the beam compliance 2.2 EXPERIMENT 2 To investigate‚ for a cantilever beam carrying an end point load‚ a) The relationship between the deflection and
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Institute General Education Department City of Dasmariñas‚ Cavite‚ Philippines EXPERIMENT NO. 1 ARCHIMEDES PRINCIPLE ------------------------------------------------- Archimedes Principle ------------------------------------------------- Abstract: * ------------------------------------------------- Sophomore students from Occupational Therapy in De La Salle Health Sciences Institute had conducted an experiment concerning Archimedes’ Principle to determine the density of solids and liquids
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Purpose: To investigate the relationship between the speed of sound in air through the pulse-echo experiment and the measured air temperature. Hypothesis: I believe the measured air temperature will affect the speed of sound because sound waves are longitudinal waves composed of the alternating compressions and rarefactions in air. If the air temperature is below 0°C‚ then the speed of sound would be lower than 331.6 m/s and if the air temperature is above 0°C‚ then the speed of sound would be higher
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EXPERIMENT 2: SUSPENDED SOLIDS 1.0 OBJECTIVE This objective of this experiment is to determine the quantity of suspended solids in polluted water samples. 2.0 INTRODUCTION Water quality is vitally important in our daily life. However‚ due to water pollution‚ the quality of water is questionable for safe usage. In order to determine water quality‚ one of the indicator and measurement that can be used is by suspended solids (SS). Suspended solids is one type of physical water-quality measurement
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------------------------------------------------- ------------------------------------------------- 1. What is the dependent variable for this experiment? ------------------------------------------------- The dependent variable is the concentration (solute) of the potato. ------------------------------------------------- ------------------------------------------------- 2. What is the independent variable for this experiment? ------------------------------------------------- The independent variable is the concentration (solute)
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DATE: 28/10/12. NAME OF THE TEACHER: GALY ELBAZ. [pic] INTRUDUCTION Experiments with animals In this project we chose to write about experiments on animals because we are owner of pets at home and this topic is pest us!: this animals have life too ‚ this animals are like humans they are a part of our family-they have feelings/thoughts/rights like a humans and the experiments are cruel and it make them to suffer!!! There exaggeration trials assessing the necessity of
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