Chemistry

shower head to reduce water hardness. Kitty defines her own success ad “I would say if we brought anything to the field of chemistry that was batter water through better chemistry.” – Kitty Hach – Darrow. I agree with Kitty because…

Assignment: Chemistry of Magnesium and Silicon Magnesium Properties Magnesium is a group is a group 2 element with the symbol, Mg, an atomic number of 12 and has a molar mass of 24.31 [1]. It is made up of 12 protons, 12 neutrons, and 12 electrons. It’s electron configuration is 1s2,2s2,2p6,3s2 this given as noble gas configuration is [Ne]3s2. It has a melting point of 650 °C and a boiling point of 1090 °C [2]. It has a metallic radius of 150 pm, a coordination number of 72(6), and a density of…

Sulphite ion (SO32-) is a weak base, but undergoes some hydrolysis to produce basic solutions. In acidic solution, the equilibria are shifted to form sulfurous acid, resulting in the evolution of SO2 gas. Sulfur dioxide is a colorless gas with a characteristic choking odor. The sulfites of Na+, K+, and NH4+ are soluble in water. Most other sulfites are insoluble in water. However, due to the basic nature of SO32-, all sulfites dissolve in acidic solution. Sulphites may occur in natural waters or…

3.2 Mechanochemical synthesis The mechanochemical method was employed to synthesis CP and MgCP where calcium hydroxide (CaOH2), phosphoric acid (H3PO4) and magnesium hydroxide (MgOH2) were used as precursors. Table 3.1 shows the parameter used by varying the weight percentages (wt. %) of Mg. Table 3.1: The weight percentages ratio for magnesium doped calcium phosphate Samples Parameter Calcium Hydroxide Ca(OH)2 (g) Phosphoric Acid H2PH03 (g) Magnesium Hydroxide Mg(OH)2 (g) Undoped CP 27…

Bernardi et al., (46) assessed nanoparticle calcium carbonate (NPCC) by means of transmission electron microscopy and the effects of NPCC addition to MTA in regard to the setting time, dimensional change, compressive strength, solubility and pH. , The experimental groups were G1 (MTA), G2 (MTA with 5% NPCC) and G3 (MTA with 10% NPCC). The tests followed ISO and ADA standards. The dimensional change and compressive strength tests were measured immediately after setting, after 24 h and after 30…

Now for all this history there are certainly important leaders of chemistry that need to be given some credit. First there is Jābir ibn Hayyān who is also known as Gerber. He was a chemist from the eighth century AD. Geber became one of the first people to use scientific methods to study and experiment. Through his experiments and studies he is thought to have discovered hydrochloric acid, sulphuric acid, and nitric acid. He also discovered what is now called Aqua Regia, which is an acid that is…

Whether we notice it or not, chemistry lives in our bodies. Things such as skin conditions, digestion, breathing, and hair growth all deal with chemistry in their own way. They all have certain chemical reactions and chemical changes that affect the way our bodies work. Even though we study different curriculums during chemistry such as the chemical equations, chemical reactions, and other things we have learned go far beyond what is said in class. During food digestion there are…

Experiment 3 titled “Physiologically Important IONS” and the purpose of this lab is to become familiar with metal and nonmetal ions and mostly important in biological and physiological processes. Also, to become familiar with tests to determine the presence or absence of ions as well as to estimate approximate amount. To begin, when a solution is tested, make sure you observe everything and note everything. This is lab, we will test some positive ion and determines if it’s an anion or a cation.…

periodic table and I will never get along. Sophomore year I decided to take Chemistry and I felt positive that I would love it since its science and it had a little of math involved. However, I began to realize that chemistry was not for me when second quarter came along. In the beginning of the year I thought that the class was going to be pretty easy and that I would love it, but my thoughts changed on me. In chemistry class the students were very smart and they all had high level classes…

post-secondary education majoring in chemistry. After graduating, Carothers continued his studies as an organic chemists. He went on to earn a Master's degree and a Ph.D. Carothers was interested in electronic theory of valence, explaining how atoms bonded together. In 1924, Carothers wrote a paper on electronic natures of the carbon-carbon double bond for the Journal of the American Chemical Society. It sparked his interest in theoretical and experimental chemistry. Shortly after February 6th…