ABSTRACT Determining the melting point of a solid organic compound is the easiest way to identify the compound and determine its purity at the same time. For actual samples of compounds‚ the melting will occur over a range of temperatures making the melting points into a melting “range”. The difference between the temperature at which the sample begins to melt and the temperature at which it finishes melting‚ or the magnitude of the melting range‚ is a very important criteria of determining the
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Effect of light on Silver Halide Salts Aim: To investigate the effect of sunlight and UV light on silver salts and to identify an application of this reaction. Hypothesis: The compounds exposed to sunlight (which already contains UV light) will decompose. The compounds which are not exposed to light (put in a dark place) will not decompose. Theory: Equipment: * 4 x petri dishes * 1 x glass stirring rod * 0.1 mol/L silver nitrate in a dropper bottle * 0.1 mol/L Sodium chloride
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Rationale of the study Almost everything these days is powered by electricity‚ and while this has certainly improved the quality of life‚ it has its downfalls as well. Some examples are: its effects on our Earth such as global warming‚ the rising bills caused by using too much electricity‚ and so much more. This is the reason why our group has decided to do a research on alternatives for energy source‚ specifically by means of saltwater or saline solution. We believe that this will help us decrease
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Effects of Water Resources Sarah Wegner SCI/275 July 31‚ 2015 Sandra Babuka Effects of Water Resources 1. Video: Protecting Americans From Danger in the Drinking Water This video describes the dangers of the Chromium 6 in the groundwater supplies in our nation. There is an ongoing controversy over whether or not the amounts of chemical present in the water can still be considered safe drinking water. According to the video‚ nearly 70 million people are drinking water that could be contaminated by
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growth was for water treated B.pumilus and the lowest mean root growth was the salt water treated control. Water treated V.paradoxus has a higher mean root growth compared with salt water‚ with a high margin of error. B.pumilus has the largest difference between root growth between water treated and salt water treated. (Table 1) Table 1: Individual results of Brassica mean root growth (mm). These were treated with Bacillus pumilus and Variovorax paradoxus under water and salt water (100mM‚ NaCl)
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THJ#6 Problem statement: How can I figure out whether different substances when mixed with water create a solution or not. Research/Prior knowledge: Substances dissolve best in hotter water. You can use a flashlight to help see if a mixture is a solution‚ a suspension‚ or colloid. A solution is a mixture that forms when substances dissolve and form a homogenous mixture. A suspension is a heterogeneous mixture that separates into layers over time. A colloid is a mixture that contains some particles
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First thing is to make your hypothesis on how to filter dirty water like mine “My hypothesis is if I use one cut bottle and layer it to be pebbles‚ sand‚ cloth‚ charcoal‚ then cloth‚ sand‚ and pebbles it filter the water will be cleaned.”. Then you start to build hypothesis‚ so start by getting a bottle‚ cut the bottom of the bottle like two inches of it. You take the cap off the bottle then get two coffee filter and use two rubber bands to tie it to the cap of the bottom. Then add about a inch of
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Introduction Over the course of several weeks‚ myself and my fellow classmates have been researching and conducting an experiment that focuses on the effect of ascorbate peroxidase (a.p) as well as salt stress at different levels of concentrations on Abelmoschus esculentus (okra). Okra is a plant that is composed of 87.1% of water. In addition to being made mostly of water this highly nutritious vegetable is also composed of 0.2% of fat‚ 9.7% of carbohydrate‚ 2.2 % protein‚ 1.0 % fiber‚ and 0
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The Stroop Effect Experiment In 1935‚ John Ridley Stroop conducted the original experiments of the stroop effect. The stroop effect is an effect that occurs when individuals attempt to name the color of words that spell out a conflicting color. Stroop reported an interference effect when individuals were asked to report the color of words presented to them. Stroop collected his data by showing his participants a sheet of paper with printed words on it. He then asked his participant’s to name the
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ANALYSIS IN WORLD LITERATURE (SALT) Title of the story: SALT Written by: Kurt Wimmer Directed by: Phillip Noyce Starring: * Angelina Jolie as Evelyn Salt/ Sasha Fyodorovna Chenkova * Liev Schreiber as Theodore “Ted” Winter/Nikolai Takovsky * Chiwetel Ejiofot as Peabody * Daniel Ilbrychski as Vasily Orlov * August Diehl as Michael Krause Evelyn Salt a CIA agent two years ago was captured
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