Hydrogen

Beginning Question: How effectively and efficiently can biphenyl be synthesized by a Suzuki coupling reaction? Claims: Biphenyl synthesized by a Suzuki coupling reaction was effectively isolated and then characterized using TLC, melting point, IR and 1H NMR tests. However, this process was not efficient because it had a poor pure yield of 22%. Evidence: The goal of the experiment was to synthesize biphenyl product by a Microwave-assisted Suzuki reaction and this was carried out using 1…

1.18 Read the following description of the element zinc and indicate which are physical properties and which are chemical properties. Zinc is a silver-gray—colored metal that melts at 420 oC. When zinc granules are added to dilute sulfuric acid, hydrogen is given off and the metal dissolves. Zinc has a hardness on the Mohs scale of 2.5 and a density of 7.13 g/cm3 at 25 oC. It reacts slowly with oxygen gas at elevated temperatures to form zinc oxide,…

in the fourth energy level, therefore it impatiently waits to react with other elements and compounds. In other words, it reacts with all acids and all non-metals. For example, potassium reacts with water to produce hydrogen gas. This reaction generates a mass of heat that the hydrogen gas may catch on fire and explode, and as the potassium burns, it emits a purple flame seen in fireworks (Pappas). There are water molecules or water vapor throughout the atmosphere, thus chemically, potassium is…

of the compounds Germanium is in is Germanium hydride. Compounds don’t have symbols but they have formulas. Germanium hydride’s formula is GeH4. The 4 represents the subscript. A subscript is how many parts it is, so Germanium hydride is 4 parts hydrogen and 1 part Germanium. The uses for germanium are camera lenses, semiconductors, fluorescent lamps, and alloys. Germanium has a total of twenty five isotopes and only five are stable. Germanium’s compounds can cause pain and redness to eyes and…

the concentration of the HCL, bottom of the test tube became hotter; it’s an exothermic reaction because energy is being released during the reaction in the form of heat. Another, increasing in concentration of HCL reacting with Mg, formation of hydrogen gas bubbles comes out faster and quicker the Mg gets invisible. Further, we record the time taken by each concentration to dissolve the Mg to plot the graph “concentration of HCl with respective…

Water, scientifically known as H2O is defined by online website as a transparent, odorless, tasteless liquid, a compound of hydrogen and oxygen, freezing at 32°F or 0°C and boiling at 212°F or 100°C. The earth is covered by approximately seventy-one percent (71%) of water and out of that percentage ninety-seven percent (97%) of it is saltwater and three (3%) percent of it is fresh water. Lakes, rivers, and swamps accounts for all surface freshwater supply and out of all the water on earth, only…

explain why Propan-2-ol is formed during the reaction between propene and steam. (A.C. 2.3) According to his role if a HX compound was added to an unsymmetrical alkene the H will bond to the compound. As propane is an unsymmetrical alkene and water has Hydrogen OH-H,therefore the H will join the carbon that has more H. This process will lead to production of propan-2-ol. Describe the cold reaction of but-2-ene with cold KMnO4 (A.C. 2.3) The potassium manganate(VII)…

Two, it evaporated tens of thousands of people In seconds and destroyed whole cities. The Atomic bomb was devastating but not devastating enough for the U.S. Government who started another bomb project only this time experimenting with Hydrogen. Thus the Hydrogen bomb was created; a bomb that was feared by all people who knew about it. This paper will give one a good understanding of how the first atomic bomb rattled many and how nuclear weaponry has evolved over the decades through the Cold…

There are five common ways to predict the product of chemical changes. They are synthesis (composition), decomposition, single replacement, double replacement, and combustion. Each can be used for different types of problems based on the equation of experiment presented to you. They can also be found using observations throughout the experiment. You use these base guidelines to write a well balanced equation with physical states and all of the reactants and products that are produced. Our…

temperature of about fifty degrees Celsius, and 100g of fine powders of antimony sulfide are added in small amounts periodically to the heated mixture. After all of the crystals of antimony sulfide have been added to the mixture and evolution of hydrogen sulfide has subsided, the temperatures are adjusted to higher levels gradually until the resultant solution starts to boil (Karl‐Heinz and Magnus 20). It is left to boil for an hour, adding boiling water periodically as it evaporates which…