3. Light a candle that is secured in a candle holder. Use tongs to hold the aluminum with sugar in it over the flame; record observations. Sodium Carbonate and Hydrochloric Acid 1. Add a small amount of sodium carbonate to a beaker.
This was done by taking small amounts of the unknown acid. It was then placed into capillary tubes and inserted into the Bibby Sterilin Device. Starting with a high plateau to find a quick melting point and then proceeding to find an actual melting point. The next experiment that aided in finding more characterizations of unknown #2651145-PLF13 was equivalent weight. In order to find the equivalent weight a titration of the unknown acid had to be conducted.
The R tube will then be put in a large beaker. Another large test tube, boiling tube will be needed, along with a Pasteur pipet. A regular sized test tube will be labeled “C” for “colored solution,” and the new boiling tube will be labeled “P” for “product”. One boiling chip will then be placed into the P tube. 5mL of acidified water will be measured, using a graduated cylinder, and will be transferred to the R tube, and will be immediately vigrously mixed with the reactants.
The column is now ready for the addition of the mixture to be separated. 2.) Separation of the Fluorene and 9-Fluorenone Mixture: Accurately weigh 0.1g of the 1:1 mixture of fluorene and 9-fluorenone mixture, place it in a small test tube, and dissolve it in 0.5mL of petroleum ether. Add a few drops of dichloromethane, just enough to effect solution. Transfer the solution to the top of the column with a Pasteur pipet.
It also involves the changing of elements into a compound. Aim: To perform a synthesis of common elements to make it into its compound state and analyse the results obtained from the processes to understand and compare the properties of the before and after state Equipment: Crucible and lid Tripod Bunsen burner Tongs Clay triangle Magnesium wire (10cm) Measuring scales Method: 1) Weight the empty crucible with its lid on the measuring scales. Make sure the crucible is dry by wiping it with paper towels as moist applies weight and make the results inaccurate. 2) Coil the magnesium wire around a pencil and remove it to make a magnesium ribbon and weight it. 3) Set up Bunsen burner and tripod while placing the clay triangle on top the tripod, align with the triangle shape.
Final exam chem 2014 Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 1. A central concept of the kinetic theory, one of the “big ideas” of chemistry, is the belief that a.|for every reaction there is an equal and opposite reaction.| b.|chemical reactions involve processes in which reactants produce products.| c.|the particles in matter are in a state of constant motion.| d.|every chemical process uses or produces energy, often in the form of heat.| ____ 2. In a chemical reaction, the type of products obtained is largely determined by which part of the reacting chemicals? a.|protons| b.|electrons| c.|neutrons| d.|nuclei| ____ 3.
By doing this it was creating huge amounts of Energy. Scientists soon realized that they could use this energy to create very powerful bombs. Scientists started working vastly to create an atomic bomb. In this process they found that a rare form of Uranium was needed to create explosive chain reactions. This uranium was Uranium 235.
Title: Bromination of (E) – Stilbene (Microscale Procedure) Author’s Name: Reinaldo George Professor: Elvis Barrett Date of Experiment: Thursday July 16th 2015 Institution: Nova Southeastern University Abstract The purpose of this experiment was to synthesize the second intermediate in the b series of Sequential Reactions by carrying out the bromination of (E)-stilbene to obtain meso-stilbene dibromide. This product is the precursor to diphenylacetylene, the next synthetic intermediate in the b series. A further purpose of this experiment is to demonstrate the stereospecific addition of bromine to alkenes. The percentage recovery was also calculated and recorded. On completion of this experiment; my lab partners and I were able to successfully synthesize the second intermediate in the b series of the
Once this is completed, a perforating gun is lowered into the well. When fired, the gun will create cracks in the rock (Fischetti , 2010). The gun is then removed and a mixture of water, sand and chemicals is pumped into the well under pressure. The intense pressure forces thousands of cracks to open up in the gas laden rock formations. The natural pressure existing in the well forces the water and chemicals back up the well.
Power plants are the main resource for the burning of coal and oil. When they are burned it releases a substance called sulfur dioxide and can affect the environment including our live stock, plants, animals, the air that we breathe and our water sources. Recycling becomes more important on large scales. Used consumer goods are collected, converted back into raw materials and are remade into new consumer products. Examples of materials commonly recycled are, office paper, steel from old buildings, plastic containers and aluminum cans.