Essay Database

… explore the hardness of the water on campus. Hard water has been a problem for hundreds of years. One of the earliest references to the hardness or softness of water is in Hippocrates discourse on water quality in Fifth century B.C. Hard water causes…

… and hydrochloric acid will be effected if we change the concentration of hydrochloric acid. Introduction In the experiment the magnesium reacts with the hydrochloric acid to create magnesium chloride and hydrogen. The balanced formula for this…

… discuss and identify several different types of chemical reactions through a series of tests and observations. Decomposition of a carbonate by heating Apparatus: *<Tab/>Spatula *<Tab/>Bunsen *<Tab/>Test…

… acid 73g/l Planning How will we time the reaction? We will put the solution on top of the cross and add the chemicals together. At this point, start the stopwatch. The solution will begin to go cloudy. You should stop the watch when you…

… <Tab/><Tab/><Tab/><Tab/>Nuclear Power Nuclear energy is the most…

… steroids? How are anabolic steroids used in sports? What side effects are there from taking anabolic steroids? This topic fits in the class because; chemists who were looking for a way to modify testosterone molecules so they would last longer discovered…

… and used mainly as a fuel for motor vehicles. A fuel is petrol that can be burned (to provide heat or power). When the fuel is burned, it emits complex mixtures of compounds that lead to the formation of smog and other potentially toxic pollutants.…

… experiment, we are going to determine the molar mass of an unknown gas, from the gas density. We are also going to use gas density, along with the kinetic molecular theory, to explain the behavior of gas filled balloons. Finally, we are going to…

… ahead of the compettion and find out as much as they can about the historical and current use of metals. This knowledge helps the company when they are deciding which metals should be used for the different jobs. Your boss has asked you to find out…

… gases(such carbon dioxide, methane, nitrous oxide, chloroflurocarbons, and tropospheric ozone) that help in heating the Earth's surface and atmosphere. The planet's energy are being changed through the process in which the atmospheric gases are…