Melting

Literature review Polymerisation of Cyclo pentene, Cyclo hexanes, Substituted Cyclo pentene and Cyclo hexanes using different catalyst Introduction:- Polymer is a word which is derived from Greek words “poly” which means many and “mer” which means parts. Polymers are substances which have large number of repeating structural units repeated in the same type of linkage. The chemistry that deals about polymers is called polymer chemistry and the reaction is called as polymerization. Polymer…

2. RESEARCH ON THE STRUCTURE OF METALS AND TYPES OF BONDING. What are metals? 24% of our planet’s mass is metal. They are used as mainly because of their properties; metals are strong, ductile, have high melting points and are excellent conductors of electricity. Other properties of metals are given below: • Can be made stronger by alloys and heat treatment. • Easily machined. • Most of them are heavy. • Susceptible to corrosion. Metals can be divided into two; Ferrous and Non-ferrous. Ferrous…

Salvador Dali Salvador Dali The Persistence of Memory Metamorphosis of Narcissus The Ecumenical Council Surrealism was a time period that started in 1924 and ended in 1966. It scorned the idea of rationalism or writings of realism, and heavily used psychoanalysis. They had elements of primitivism and mythism as well as they went to treat the unconcious mind. They thought that rationality was a…

The arctic ice pack is a primary indicator of global climate change. Arctic ice melting is largely due to carbon dioxide emissions. In recent weeks, the arctic ice pack has shrunk to an extent that no computer model nor scientist had thought possible. The term, ‘arctic ice melt’ refers to the ice located at the arctic circle that is warming due to severe climate change. In certain high latitude regions such as the Arctic Ocean, the surface waters are actually colder than the deep waters and the…

RESULT AND DISCUSSION 7.1. Preformulation studies 7.1.1. Identification of pure drug by FTIR Figure7.1: Identification of Sample through FTIR Figure 7.2: FTIR Spectrum of Standard Prazosin hydrochloride (with references of B.P.- 2009) Table: 7.1 - Characteristics peaks of Prazosin hydrochloride S.No. Reference peaks (cm-1) Theoretical peak of Prazosin hydrochloride Obtained peaks (cm-1) Functional Group Stretching/ Bending 1 1750-1680 1529.92 1529.92 C=O Stretching 2. 1650-1580…

their position of global warming to fit in with the rest of their community, that there is no scientific evidence behind it. However, there is scientific evidence that proves the rising atmospheric temperature leading to the warming of the Earth and melting of glaciers. The Earth is warming at a rate that is almost irreversible causing more than half of glaciers and ice caps that have been proven by the rise of our seas. Over the last century, it has been proven that everyone has played a role…

dissolving aluminum oxide in a new solvent-fused cryolite. Aluminum oxide has a melting point of 2,000 C, so electrolysis is impractical, however pure cryolite has a melting point of 1,012 C. Thus with a small percentage of alumina dissolved in it and its melting point drops to about 1,000 C. Then passing a low voltage through it which causes liquid aluminum metal. Then aluminum fluoride is added to the mixture to reduce the melting point. To scale up this process it took Hall years of…

The periodic table is a very identifiable symbol in everything science. There is one hanging in almost every chemistry class. But, the one we know is not what it always was. Before our modern periodic table there was the periodic table that Dmitri Mendeleev constructed. There are many differences and similarities between the Modern Periodic Table and Mendeleev’s Periodic Table. Just for example, the modern periodic table arranges elements in order of increasing atomic number. Mendeleev’s ordered…

shocked because of how rapidly these glaciers are melting. If the melting of ice poles continue than there will be a serious problem for people living in cities near coast like Kolkata, Shanghai, Florida and many more that will get submerged under water as sea level is rising significantly. Also, melting of glaciers will lead to depletion of rivers upon which many people survive for living and will affect the flora and fauna in these areas. The melting of these glaciers has led to destruction of…

Although glaciers seem motionless to the observer, glaciers are always in endless motion and the glacier terminus is always either advancing or retreating. However, the cumulative temperate causing the air to be above melting point causing the glacier treating faster than it is advancing. Most glaciers in the world, are sensitive to temperature than to other climatic factors. The ice thickness reduction is followed by glacier shrinkage. According to national geographic…