Oxygen toxicity

Since the naming of the dinosaurs in 1842 it has been thought that their metabolisms were similar to current day ectothermic, cold blooded reptiles., In the 1960’s- 1970’s; however, it started to become apparent that an endothermic metabolism (warm blooded, like mammals) is more conformable with new evidence and observations. Originally, predictions on the paleothermometry of dinosaurs was based on the physical performance such as the estimation of running speed from trace fossils as well as…

Have you ever thought that something in the ground would be inside of you at some point in time? Or what's inside of you right now was at some point in time was in a cow? The process of recycling atoms makes this possible. Everything is made up of a star that exploded in space a billion years ago. The Law of Conservation of Mass, discovered by Antoine Lavoisier in 1785, states that matter can not be created or destroyed makes the process of recycling atoms true/possible. When a person exhales…

Draw resonance structures showing all the positions at which the positive charge is delocalized on the aromatic ring in the phenonium ion. If a methoxy group (-OCH3) or a nitro group (–NO2) were substituted in the 4-position on the aromatic ring, how would the stability of the phenonium ion change? Compare methoxy substituted, nitro substituted and unsubstituted, and order them by increasing stability. Explain your answer thoroughly. 2) Benzopinacol and benzopinacolone have nearly…

Imagine trying to figure out one possible combination to a mixture, when there are over 100 possibilities. The 8th graders had to look at the physical and chemical properties, to somehow figure out the mixture. A group of students thinks that Baking Soda and Citric Acid is what’s in the mystery mixture. That group thinks that Baking Soda and Citric Acid is in it for a lot of reasons. One reason is that the mystery mixture has circular round objects in it and the Citric Acid is circular and…

Reflective Journal 3- How Plants Tell Time After reviewing chapters six and seven in the Biology Life on Earth textbook while also considering the video titled How Plants Tell Time, it can be concluded that photosynthesis is the most important process on earth in regards to maintaining life. Photosynthesis is an endergonic reaction, meaning that the products involved in the process have more energy than the reactants (Anderson, 18). Because of this endergonic reaction, plants are able to store…

Water On Mars Have you ever thought that it would be great if there was water on Mars? Well, there is evidence that there is water on Mars. I never thought that it was possible for water to be on Mars, also water is a great place for life. We already know for sure that there is lots of water on Mars, it is just frozen at the north and south pole (Redd). The specific name for the frozen water is ice caps. The ice caps are gigantic, they are around 2 miles across each one and there are two of…

At this step, the compound is stable and sits around until a source of proton is available to protonate. In the workup, the sulfuric acid is added to hydrolyze the product. The proton is bonded to the oxygen to making the final product neutral and a tertiary alcohol. Experimental In the beginning of the lab, a clean 100 mL round bottom flask, 1.002 g of Mg turnings, 4.5 mL of bromobenzene, heating mantle, stir bar, stir plate, water hoses, condenser…

What can be done to protect yourself from toxic metal fumes during the welding process? It's been long known that not protecting yourself from such dangerous fumes comes at a very high price on your health. Acute and prolonged exposure may have very negative consequences. Fortunately there are many ways to protect your health and enjoy a prosperous long life. Without the proper protection, overexposure to hazardous fumes can show acute or chronic health effects. Acute effects appearing…

Light Intensity and the Rate of Photosynthesis By: Maxwell Wissman, Lela Cohen, Sophia Stevenson and Russell Leibovitz ABSTRACT: This experiment was done to answer and/or to find out if you change the light intensity on a healthy plant, then it will photosynthesize differently, because the photons will hit the leaves of the plant more or less, thus increasing or decreasing the photosynthetic rate. This would answer the question by seeing how many bubbles come up without any light and how many…

Objective The objective of the experiment was to determine the purity and components of a mixture of fluorescein and bromonitroindoline, as well as separate them, through the process of thin layer chromatography. Procedure Part A- Separation of Compounds by Thin Layer Chromatography • Three 100 mL beakers and watch glasses were cleaned in preparation for this experiment. Three silica gel plates were acquired from the instructor, and to each plate a line was drawn 5 mm from the edge of the…