Magnesium oxide

Coordination complex A coordination compound is the result of the reaction of lewis acid and lewis base in which neutral molecules called ligands make coordinate covalent bond with middle metal atom. Ligands have one electron pair to donate to a metal atom and are called complex agents. • Metal atoms are Lewis acids because they can accept pairs of electrons from Lewis bases. • Within a ligand, the atom that is directly bonded to the metal atom/ion is called the donor atom. • A coordinate…

composed of volcanic lava and sediments forming andesite and granite. 2. Oceanic Crust. It is the crust that lies beneath the oceans’ bed and is thin. The thickness of oceanic crust ranges from 5km to 10km. It is composed of maximum proportion of magnesium, basalt and gabbro. Fig.3, shows the two types of earth’s crust: continental crust and oceanic…

Problem Statement: How do different amounts of soil affect the pH of water? Is the relationship the same for different types of soils? Background: PH is a measurement of how many ions of hydrogen are found in a solution. The pH scale measures how alkaline or acidic an object is. The scale has numbers ranging from zero (which are considered the most acidic) to fourteen (the most alkaline, otherwise known as the most basic). Pure water has a pH of seven, however most water, either from the tap or…

III. RESULTS AND DISCUSSION A. Influence of specific gravity to water to binder ratio of M-S-H binder In development of M-S-H binder with magnesium oxide and silica fume, it is noted that silica fume has rather low specific gravity (S.G) and bulk density compared to Portland cement (PC). Thus, use of high silica fume content in the binder consequently results in a binder system of low specific gravity and bulk density, compared to PC. The light weight binder leads to a difference in water to…

of your blood vessels. This compound could even be beneficial for those struggling with diabetes and erectile dysfunction. It doesn’t end there though because watermelons are also rich in vitamins A and C, as well as the minerals potassium and magnesium. This reddish watery fruit is truly good for you in so many ways. 2. Yogurt Yogurt helps you prevent…

contains ordinary Portland cement as a primary binder and production of ordinary Portland cement causes 7% of the total greenhouse gases in to the earth’s atmosphere (Malhotra 2002) and production of the ordinary Portland cement produces carbon-di-oxide in mainly two ways , they are burning of fossil fuels and the other is calcination of lime stone into lime. Quarrying of the lime stone is also another environmental degradation. The production of 1 tonne of cement needs about 1.6 tonnes…

In my IB English class, we are studying Franz Kafka’s The Metamorphosis, in which the main character, Gregor Samsa awakes one morning “from agitated dreams” and finds “himself, in his bed, transformed into a monstrous vermin” (Kafka 1). In the first pages, as Gregor contemplates his reformation personally before revealing himself to his family and boss outside his door, the fact that he has transformed into a bug remains known solely to himself, therefore existing as personal knowledge. In this…

Before the invention of modern antacids, people would chew chalk (calcium carbonate) to relieve the burning felt by too much acid in the stomach. But most currently used antacids are a combination of aluminum and magnesium hydroxide, often containing sodium bicarbonate as well. The antacids counteract stomach acid by neutralizing the acid, because antacids are formed of bases. Stomach acid, or gastric acid, is made of hydrochloric acid, potassium chloride, and sodium…

elements jump levels because they gain energy, then as they fall back down in the orbitals they release energy which gives off the colored flame (Clark). Magnesium is different than many other elements, while it appears to emit no light it actually produces white light. This is because magnesium reacts with the oxygen in the air to produce magnesium oxide which is very hot and emits all the visible wavelengths at similar frequencies (USCB Science Line). A tool used was the cobalt blue glass to…

under the blanket of flux consisting of silica, manganese oxide or calcium fluoride which is fed into the weld zone through a hopper by a gravity fed controlled nozzle. The thick layer of flux covers the molten metal preventing the spatter and sparks to spread out as a result of which an insulation is formed promoting a deeper penetration of heat into the workpiece making a stronger weld joint. The insulation of the flux also prevents the oxides and hydrides from the atmosphere getting trapped…