Encyclopædia Britannica Paper chromatography is used to separate "dissolved chemical substances". An example of dissolved chemical substances could be the pigments that make up a specific color‚ for example in a marker. When a chromatography paper experiment is done on a black marker‚ the experiment tends to separate all the different pigments that make up the color. In this experiment‚ the substance investigated was a black water soluble Giotto marker pen. Paper chromatography has two phases
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In the last couple years airplane tickets have skyrocketed. The common question is: Why do airplane tickets fluctuate so much? And there are actually lots of reasons‚ such as oil prices‚ supply and demand‚ taxes‚ and more. There are ways to lower prices for tickets‚ but overall‚ they are very expensive‚ and I think that they should be less. Airplane tickets have gone up for a number of reasons. In the article Why your Airplane ticket is so expensive nowadays the author explains how there are
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Name: Andre Davis Lab Partner: Ariana camper Title: Lab 21 Qualitative Analysis Date: April 11‚ 2017 Objective: The goal for this lab was to take the unknown solution and determine its ions. Experiment Procedure Part 1 Group 1 10 drops of an unknown solution into a test tube. add four drops of 6M HCl‚ then stir it and place in centrifuge for 30seconds to a minute. Test for completeness of precipitation after testing for precipitation add one drop no more than one drop of 6 M HCl to the supernate
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Finding the best quality paper towel Question: Which paper towel has the highest quality overall? Background: Past tests of the highest quality paper towel showed that Bounty was the best choice for a kitchen paper towel. Although it wasn’t the most absorbent‚ which was Brawny‚ it was rather strong in both durability and absorbency. (consumerreports.org) Industrial and 7th generation are most commonly used in public places such as; School bathrooms‚ public restrooms and public sinks
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Arlind Mara Paper Towel Lab Report AP Biology 15 September 2011 Which Towel is The Quicker-Picker Upper! To determine which of the most popular paper towel brands such as Bounty and Marcal would be the Quicker-Picker-Upper I conducted the following experiment during which I dipped 6in X 6in squares of paper towels into 100mL and measured the amount of water absorbed by the towels in 20 seconds. After averaging all 3 trials for the paper towel brands that I tested I arrived to the conclusion
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Academy Thin Client Computer Lab Project Submitted by James I. Davis jd@gocatgo.com TIE-532 November 30‚ 2008 Thin Client Computer Lab Project - page 2 Thin Client Computer Lab Project Introduction Computers are an integral part of 21st century life‚ and as such technology education is recognized as part of the Illinois Learning Standards (ISBE‚ 2008). A computer lab is an efficient way to deliver access to computers and the Internet to students. Traditional labs‚ like the one at Dvorak Technology
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Toxicology Lab 1. In this investigation‚ a wide range of concentrations of Sodium Chloride (NaCl) solution were created and the effects that they had on radish seeds were tested. This ultimately created a doseresponse experiment in which it was detectable whether or not radish seeds were a reliable bioassay for the toxicity of NaCl. The goal of this experiment was to determine a correlation between toxicity and seed germination/radicle
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Objective of experiment * The objective of the experiment is to assess the effect of different pH conditions on enzyme activity. Hypothesis * I feel the pH affected the enzyme activity to produce product. Prediction * If the pH affected the enzyme activity to produce product‚ then rate of reaction will change. Procedure * The procedure that we followed was to take two test tubes and label one pH2 and one pH10 and incubate 1 ml of each solution for 30 minutes. Then after 30 minutes
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The Math lab evaluation Have you ever been to a place that is depressing‚ gloomy‚ and absolutely apathetic? If not then by all means make a point to go by and visit the math lab. As a student of the University of South Alabama I have been asked to evaluate the math lab by my supervisor. My supervisor had received various complaints by students‚ for that reason I have been asked to observe the math lab record what I saw and write down any suggestions for change. During this evaluation I will discuss
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The invention of the airplane effected ordinary people in both positive and negative ways. The first public plane service only took one passenger at a time. It cost $5 for a one way trip across Tampa Bay which was called St. Petersburg. They provided the public with two trips per day and for four months. Compared with the two hour boat road the twenty three minute plane ride was much preferred by travelers. This being an exception commercial aviation was not very common before world war one as most
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