* What is this substance This substance is iodide Confidence Report The aim of extraction, is to separate a part of raw material, using a solvent such as water with heat. A tincture of iodine is a common medicine sold in many pharmacies, used as an antiseptic on cuts of the skin. The objective of the seaweed lab, is to produce a tincture of iodine by extracting Iodide and other components (seen when a mixture of iodine is present), from seaweed. We
Then after agitating the seaweed to remove monosodium glutamate and pouring off the water, 40 mL of distilled water was added to the seaweed and heated. During this procedure, the iodine extract was filtered and several tests, both standard procedure and home- Objective: The purpose of this experiment is to understand how a single substance can be isolated from a mixture, like seaweed and water. Also, learn how to utilize filtration and extraction to make a tincture for testing for Iodine, Iodide Ion, and Triiodide Ion. Procedure: 1. 6 grams of dried seaweed, cut into ½ inches should be places into a 150 mL beakers that will later be filled with ¾ distilled or deionized water.
Usually it's used as a way to make sure that something’s pH is suitable for human consumption or for human to be close to. However, it is also used to make sure that products, such as cleaning products, remove bacteria. Cleaning products need to be slightly acidic for these products to work so they titrate to get the right morality. Titration is used in pretty much everything. Method of testing the tap water * Rinse a 250 ml conical flask with distilled water.
Osmotic pressure, one of the colligative properties previously discussed, is defined as the pressure used by the water flow through a membrane separating two solutions with different concentrations of various solutes. The purpose of this lab was to assist in the educating one upon the freezing points of a pure solvent compared to that of a solvent found within a nonvolatile solute, while at the same time understanding and gaining a greater depth of osmosis. I greatly enjoyed this lab, although I wish it could have been conducted in less time. Observations: I took note of several components of the lab conducted. The dialysis tubing was one I especially monitored, checking every hour with recordings.
The buffer solution is used to keep the pH of the experiment at a constant number while carrying ions that are essential to hold a current. Agarose is a polysaccharide usually extracted from algae. It comes in a powder but when mixed with boiling water and poured into the chamber it transforms into a gel. A comb is put into place before the Agarose is poured to allow wells where samples will be deposited when the Agarose hardens. When Agarose is in a gel state it is filled with tiny pores that allow molecules to pass through.
ABSTRACT Three experiments were completed to determine the quality of water that had been contaminated, soiled, and to determine the differences between the water that comes from a kitchen sink and the elegantly bottled water that is conveniently sold in the store. Using various Earth materials (sand, rock, soil, and charcoal) combined with scientific materials (beakers, funnel, and alum), the first two experiments tested the effect of contaminated waters filtered through a simple soil filter, as well as a complex Earth model filter. The final experiment used various test strips to test certain potential differences between tap water and bottled water. Testing Man’s Naiveté of Our Water Quality Drinking water in the United States has undergone many quality standard transformations throughout the 1900’s up until present day. There are many rules to follow when building structures, removing waste, and even when it comes to farming in all its forms.
In June of 2000 the cap requirements were changed from a multi-media cap to a geosynthetic clay cap. OU2’s elements were ground water removal via on-site extraction wells, ground water treatment (air stripping) for removal of VOC’s, discharge to a local water treatment plant and continued monitoring. In 2005 an amended report eliminated the removal and treatment part and, instead, replaced it with an injection of vegetable oil as a bioremediation of the VOC’s with monitoring. OU’3 excavation and stabilization of contaminated soils, on-site disposal of the stabilized soil, installation of a low permeability cap over the treated soil, placement of one foot of topsoil over the remainder of the uncapped site and placement of controls. The clean up approach for OU4 was to allow the clean up of the other operable units to address the contamination of the wetlands.
Abstract The purpose of this experiment was to investigate if Artemia salina is a good bioindicator for toxins in their environment used to detect pollution. Brine shrimp have a high tolerance for changes in their environment. Shrimp were exposed to varying concentrations of ethanol to test their tolerance level and determine the viability for the crustaceans. Four petri dishes of each concentration were used, as well as four dishes of a control that only contained brine water. Three hundred brine shrimp were placed in each petri dish for each of the controls and ethanol concentrations.
Washington Post- Informed Citizenry I read “For Old Drugs, New Tricks” in the Health section of the newspaper. This article is about a safe environmental way of getting rid of old pharmaceutical drugs. At the Leesburg Pharmacy in Loudoun County, a big, round fish bowl is used to hold the old pharmaceutical drugs, then the drugs are packed in cartons by pharmacy personnel and ultimately incinerated by a commercial waste firm. I believe that this is a great idea in removing unwanted drugs, it allows people to throw away there unwanted drugs at place that will safely eradicate them without harming the environment. There are many people who throw away their unwanted drugs by flushing them down the toilet or throwing them in the trash.
Care must be taken when squeezing the pipet bulb on the filter pipet. Too much pressure might cause the filter to leak or fall off. Add about 2 mL of fresh tert-butyl methyl ether to the solid in the RB flask, warm briefly, let the solids settle for a minute, and pipet the liquid to the centrifuge tube as before. Again allow the solids to settle briefly in the centrifuge tube, then filter the liquid through the pressure filtration apparatus, into the same 25 mL Erlenmeyer flask. Doing a rinse such as this helps to ensure that any trimyristin that was left behind in the RB flask and centrifuge tube is not lost, thereby helping to ensure that