Oxygen mask

necessary for organisms to survive. In this lab, the enzyme peroxidase was used. Peroxidase breaks down peroxide, a byproduct of cellular respiration. The reaction occurs as follows: Peroxidase + Hydrogen peroxide → Complex → Peroxidase + Water + Oxygen(g) Because the peroxidase is an enzyme, is it not consumed by the reaction. Using pH buffers, the pH was kept in a certain range, be it close to pH 3, pH 5, etc. pH effects that shape and other properties of the enzyme, which in turn affect…

every 1 catalase molecule and the more molecules of substrate present in the solution means that there are more molecules to fit the enzyme. The reaction results in more products being created. The products for this reaction were water and oxygen. The more oxygen molecules that are created, the more there are to travel to the surface. It is when these molecules get trapped underneath the paper disc that it is lifted to the surface by the…

To carry out the experiment we need to get caffeine into a solution. We used a solid-liquid extraction by adding 14 tea bags into a 1L beaker with 6g of sodium carbonate, 250 mL of tap water and bringing this to a boil for five minutes on a hot plate. Sodium carbonate is a weak bronsted base, that neutralizes tannic acids extracted from tea, that interfere with the later sublimation operation.(1) We turned the heat off after five minutes, added ice cubes to cool the mixture to room temperature…

Chromatography Abstract: The purpose of this lab is to use chromatography to separate and purify organic compounds. There are many different types of chromatography but most depend on the principle of adsorption. The two important components of chromatography are the adsorbent and the eluent. Adsorbents are usually solid materials that will attract and adsorb the materials to be separated. The eluent is the solvent, which carries the materials to be separated through the adsorbent. After being…

The problem being tested is how do different chemicals, such as ammonium chloride, calcium chloride, and sodium chloride, affect the temperature of the water? The hypothesis being studied is, if three grams of calcium chloride is mixed with 50.0mL of water, then the temperature will decrease because there are more atoms in calcium chloride than in ammonium chloride and sodium chloride. The independent variables is the type of chemical and the dependent variable is the change in the temperature…

Dehumidification in Greater Cincinnati and Northern Kentucky –Tristate Area If your indoor air feels heavy and smells a bit musty, it could mean that your home is experiencing high levels of humidity. Although humidity is important, having too much can destroy the pleasant environment because it encourages allergens, like mold and mildew, to grow. Thankfully, you can reduce the amount of humidity in the air with a dedicated dehumidifier. This system is designed to pull excess moisture in the air…

Helium is the second element in the periodic table. Its period number is 1 and it is apart of group number: 18. The group that Helium falls under is the Noble Gases. The element has an atomic number of 2, an atomic mass of 4 and is classified as a non-metal. It is the second most abundant element in the universe. Helium was discovered on the sun before it was found on the earth. In 1895, Pierre-Jules-César Janssen, a French astronomer and Norman Lockyer, an English astronomer both who discovered…

some of the highlights of the chapter. The way I see it, God is the original/first chemist. He took His own creations (the elements in our Periodic Table) to make provisions for His ultimate creation, mankind. He made oxygen for use to breathe. God combined hydrogen and oxygen, in the right combination, to create water. He left precious metals like gold and silver for mankind’s use, and all of the other elements. The…

Neon is the 10th element on the periodic table. It was discovered by Sir William Ramsay and Morris Travers in 1898 (Mowat 130). It has 10 protons, 10 neutrons, and 10 electrons. Neon has no stable compounds because it is a noble gas. However, there are three stable isotopes, the most abundant being neon-20 (90.5%). It has no color, odor, or taste. It changes from a gas to a liquid at -245.92°C and from a liquid to a solid at -248.6°C (Chemical Elements). It is found in the sun and the…

The use of geophysical methods in the search for clandestine graves has increasing in popularity with the improvement of the technology. Though geophysical methods can be useful, more often than not geophysical methods cannot be relied upon to definitively locate a clandestine burial. For the most part, geophysical search methods are really only useful in locating ground anomalies that have the potential to be a burial site and then have to be examined by another search method. The geophysical…