Magic marker inks are often mixtures of several compounds. Paper chromatography is a common method of separating various components of a mixture. After separation, you can observe the different colors that make up a particular color of magic marker ink. You can also calculate a ratio Rf, which compares how far each compound traveled to how far each solvent (substance that dissolves another substance) traveled during the experiment. Rf = Ds/Df Ds = Distance traveled by the compound Df = Distance traveled by the solvent Materials: coffee filter, tape, isopropyl alcohol (rubbing alcohol), water, 3 different color magic markers (not permanent); 3 identical tall, narrow drinking glasses; metric ruler, 3 pencils Pre-lab Questions: List one extensive and one intensive property of marker ink.
al.). Some pollutants – for instance, polycyclic aromatic hydrocarbons – can lead to life-threatening diseases in humans and wildlife, such as cancer (Harvey). Scientists use many different methods to remove these pollutants from water supplies; one of those methods is the utilization of adsorption onto a porous substance, normally charcoal. Due to numerous circumstances, scientists have begun searching for alternatives to charcoal, one of them being Bentonite clay. However, Bentonite clay cannot be easily removed from the water, so in this project the students were instructed to modify the clay to make it magnetic and then compare its effectiveness in absorbing a model PAH against charcoal.
Jan is a professional coder in charge of working on billing and reimbursements for a real buys general surgeon’s office. I believe that Jan has been working very hard trying to find the correct codes to match the procedures and Jan knows that she has to get them completed and done right. I believe that Jan could not find the correct procedural codes; because she probably did not have the proper CPT code manual book. If Jan would have sent the wrong codes for the reimbursements she could have caused the physician to be penalized by law on sending inappropriate claims. If Jan, were using the updated CPT manual she might have found the correct codes for the reimbursements or the procedural terminology (CPT) codes that are not listed.
Discussion & Conclusion In this experiment we learned how to synthesize the cyclohexene by dehydration of cyclohexanol. We procedure the first step where we have to mix the components. Then we heat the R.B.F with a fractionating column, distilled water. Then we obtained the layers, and we transferred the organic layer to a small, dry Erlenmeyer flask. We added anhydrous Sodium Sulfate as a drying agent.
Ocean County College Department of Chemistry LAB 1: OBSERVATIONS OF CHEMICAL CHANGES Submitted by Date Submitted: 05 FEB 2010 Date Performed: 30 JAN 2010 Lab Section: DL2 Course Instructor: Professor Maria Tamburro Purpose : Using various chemicals provided in the LABPAQ and home cleaning supplies I am to study the composition and structure of materials, and the changes that they undergo. Throughout this experiment, indication that chemical changes are taking place is to be noted. A chemical change occurs when the chemical makeup of the substance changes, and a new substance or substances are formed. The most common chemical changes are observable through color changes, the formation of
This was so that the mussel samples would not go bad due to heat or harsh solvents. They were extracted with a mild solvent, and then concentrated by evaporation. The team found that the vapor was not toxic, but the residue after was. Other extractions were done to see how the residue separated when added with other mixtures of nonpolar solvents. In the toxic mussels, the visible light absorption spectrum revealed a pattern that was characteristic of phytoplankton pigments.
Another factor may include that the scent of sharpie marker was too strong for the termites to endure. Further experiments to test why the termites prefer the red ink pen to the red ink sharpie marker would include getting the chemical make up of the red ink pen and the red ink sharpie and figuring out what draws the termites to the red ink in pens rather that to the red ink in sharpie markers. To carry this out, the termites would be exposed to the different chemicals in the sharpie red ink and the red pen ink to see what particular chemical or chemicals affect the termite’s
To get the right result for solution reaction to occur, it is base on the measuring liquid for each solution. You need to pour the right amount of each solution so you can determine the result of solution reaction (product) will occurs accurately. If you pour your solution (liquid) into a beaker not at the right point than you can’t find the result of solution reaction (product) accurately. You need to put a lid on top of a weighing bottle because you don’t want your solution to spill out and other stuff (oil, dirt, sweat) will get into a weighing bottle that can cause the mass is not accurate and not
Thus, it is essential that the technician inputs the mathematical formula correctly because too much radiation can cause the patient to get sick, depending on how long or the amount of gamma radiation is exposure to the patient. Some types of radiation are not harmful, such as the radiation used to kill cancer cells in the anatomy of a patient; this type of radiation to project bones would be bad if the formula is not
Before creating the look it is important that you work with the right tools, having brushes specifically designed for this kind of look really goes a long way and helps to get you more amazing results. Starting off with a cleansed face is best, to remove all traces of dust and grime. Eye shadow that gathers in the creases of your eyelids does not create a desirable look. There for to keep eye shadow from melting into your eyelid crease as the day goes by is to keep your eyelids oil-free. To do that you must use a primer, which comes in a gel like form.