Essay Database

… spread diseases in the modern era. The disease was first found in 1981 as doctors around the United States began to report groups of young, homosexual men developing a rare pneumonia caused by an organism called Penumocystis carini. These…

… state is soft, malleable and ductile (that can be stretched, drawn or hammered thin without breaking ((Webster's Dictionary, 419, 1988)) with a hardness of 4-5. It is easily magnetized at room temperatures and this property disappears when heated…

… Helium is one of the most common elements in the universe it is a rare gas on earth. It exists in the atmosphere in such small quantities (less than five parts per million) that recovering it from the air is uneconomical. Helium is produced as a…

… determine the identity of an unknown amino acid. The initial pH of the solution was 1.96, and the pKa's found experimentally were 2.0, 4.0, and 9.85. The accepted pKa values were found to be 2.10, 4.07, and 9.47. The molecular weight was calcula…

… to measure the charge of an electron within an accuracy range of 3%. In 1913 he came out with a value of the electrical charge that would serve the world of science for a generation.         Young Millikan had a childhood like most others:…

… atomic bomb to end World War II - AP Physics Period 2 The Atom         In the spring of 1897 J.J. Thomson demonstrated that the beam of glowing matter in a cathode-ray tube was not made of light waves, as 'the almost unanimous opinio…

… Thermo II 3.0         Abstract The objective of this study is to construct a computer model of a water vapor power plant. This model will be used to calculate the state properties at all points within the cycle. Included is an analysis of…

…         Vitamin C also known as Ascorbic acid is one of the compounds that is necessary for the growth, health, and build of the skeletal structure as well as the general make-up of the human body (1). If the intake of Vitamin C increases it…

… Ketonperoxider är cykliska, organiska ämnen som med lätthet sönderfaller med hög hastighet under bildandet av en stor mängd gaser. Acetontricykloperoxid är den bästa och med lätthet den enklaste att tillverka (Andra peroxiderbara ketoner innefattar…

… grade OXFORD AND CAMBRIDGE SCHOOLS EXAMINATION BOARD. General Certificate Examination - Advanced Level Chemistry (Salters') - Paper 3 mock. ROBERT TAYLOR U6JW. THE ROLE CATALYSTS IN CHEMICAL REACTIONS, THEIR IMPORTANCE IN INDUSTRY, …