Experiment 5 Title : Thin Layer Chromatography Objectives: i. To distinguish polar and non-polar solvents. ii. To familiar with the analysis technique by using the thin layer chromatography. iii. To differentiate the retention factor‚ Rf for different compounds. [pic] Result: |Compound |Distance traveled by the compound | |o-nitroanaline |2.45
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The separation is based on differential partitioning between the mobile and stationary phases. Subtle differences in a compound’s partition coefficient result in differential retention on the stationary phase and thus affect the separation. Thin layer chromatography (TLC) is a chromatographic technique that we use to separate the components of a mixture using a thin stationary phase such as silica plate supported by an inert backing. It applies mainly in medical‚ biological‚ chemical and pharmaceutical
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HRES 2170 Current Events Presentation Assignment & Marking Rubric Instructor – Peter Claghorn Team Member 1: __________________________ Presentation Date: _____________________ Team Member 2: __________________________ Team Member 3: __________________________ PLEASE NOTE: Presentations begin in class on September 25 – we will follow the roster posted on Bb and there will be no deferrals granted. If you need to change presentation
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Record responses in med blue bold font Student Exploration: Density Experiment: Slice and Dice Define Vocabulary Density: The degree of compactness of a substance Mass: A coherent‚ typically large body of matter with no definite shape Matter: The substance or substances of which any physical object consists or is composed Volume: The quantity of three-dimensional space occupied by a liquid‚ solid‚ or gas Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. What do
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The upper layer of the atmosphere surrounded by ozone (15 to 30 Kms) is known as ozonosphere. Ozone layer is a protective stratospheric layer‚ also known as ozone umbrella. Ozone concentration differs by about 10 ppm in stratosphere compared to 0.05 ppm in troposphere. It acts as a protective shield for the man‚ animals and plants by filtering out the lethal ultraviolet rays from reaching the earth’s surface. If the ozone layer is not there‚ the harmful ultraviolet rays will reach to the
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Table of Contents Part 1: General review of data link layer 2 a) Explain the working principles of the data link layer. 2 b) Is controlled access better than contention for media access control? Discuss. 2 c) Why is error detection important in this layer? What is being measured? 3 d) Identify three significant noises that can cause errors in data communication digital circuits. Briefly explain. 3 Part 2: General review of error correction 4 a) Why is cyclical redundancy
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Title Page Density Formal Lab Report Name Professors Name Date Purpose/Objective: Determine density of a product for a plastic manufacturing facility. Provide quality control by making sure the physical properties are within design specifications. Density is defined as the ratio of an object’s mass to its volume‚ measured by dividing mass by volume (density = mass/volume). This was accomplished using two different experimental methods‚ displacement and floatation. The theory is that
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Density‚ Mass and Volume Density is the measure of how tightly the particles of a substance are packed into a given volume. L=1cm B=1cm H=1cm Aluminium=1cm3 Volume=lbh Volume= 1cm*1cm*1cm Volume= 1cm3 Iron 1cm3 1cm3 of iron would be however than 1 cm of aluminium. The density of the iron cube would be greater than the density of the aluminium cube. One explanation from that is that the particles/molecules in the iron cube are more tightly
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PHYSICS INTERNAL ASSESSMENT How to measure the density of water using graphical method? Name: Chia Yee Xin Candidate Number: Session: October 2014 School: Sri KDU International School Research Question: To measure the density of water using graphical method. Introduction: Water is the most abundant compound on the Earth and it covers about 70% of the Earth’s surface. Water is a transparent fluid which forms the world’s streams‚ lakes‚ oceans and rain‚ and is the major constituent of
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The purpose of this experiment was to determine the density of an object by measuring its mass and volume. Hypothesis When the rubber stopper is dropped into the overflow can‚ the volume displaced (mL) will be equal to the number of grams of the rubber stopper. I think this will be the outcome because I learned before that 1g=1ml‚ so for every gram dropped into the overflow can‚ 1 ml should be displaced (the volume). Therefore I think the density of each rubber stopper would be 1g/ml. Materials
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