Oxides

Climate change is an extraordinarily important problem, and requires immediate and radical government intervention on the sources of greenhouse gas emissions. Climate change’s effects are already being felt around the globe in the form of coral bleaching, erratic and extreme precipitation and weather patterns, rising sea levels, arctic ice melt, and unprecedented record temperatures. If mitigation efforts are not implemented, it will impose epoch-making impacts geographically, environmentally,…

studies, carbon dioxide was revealed to not support combustion and in fact caused a candle’s flame to extinguish when placed over it. His calculations and experimentation showed that carbon dioxide was a component of the atmosphere by converting calcium oxide to calcium carbonate on exposure to the air. Through experimentation with reactions between acids (sulfuric) and metals (zinc) by Henry Cavendish (1731-1810) hydrogen became the second gas to be discovered and classified in 1766. He heavily…

Copper Hydroxide + Sodium Nitrate Cu(NO3)2(aq)+2NaOH(aq) CuOH(s)+2NaNo3(aq) - Colour change from green to blue - Gas was produced, vapour 3 Copper hydroxide (s) + heat (aq) Copper Oxide (s) + water(l) Cu(OH)2(aq)+heat(aq) CuO(s)+H2O(g) - Colour change, from blue to black - Black precipitate was formed 4 Copper oxide (s) + Sulfuric acid (aq) Copper sulphate (aq) +Water (l) CuO(s)+H2SO4(aq) CuSO4(aq)+H2O(l) - Colour change from black to light blue 5 Copper sulphate (aq) + Zinc (s) Zinc…

In order to ensure the safety of users of the Nachsicht device, it will go through a series of rigorous testing to assess its biocompatibility and ability to be sterilized. As the materials used in the Nachsicht, polymethyl-methacrylate (PMMA) and graphene, have been used in other biomedical applications, the host response to the device is highly predictable. Various options for sterilizing the device will be assessed. The tests will be performed in vitro and in vivo before proceeding to…

Sickle cell anemia (SCA) is a classification of the most common form of sickle cell disease. This class of sickle cell disease is genetic and is caused by the homozygous mutation of the beta-hemoglobin gene (beta S allele) in red blood cells [2]. Individuals who are diagnosed with sickle cell anemia have deformed (sickle shaped) red blood cells that have a lower lifespan [3]. This causes irreversible tissue damage and causes a vaso-occlusive crisis, which is pain in the abdomen, bones and chest…

areas” [7]. Carbon monoxide is a colourless, poisonous gas that is formed when fossil fuels like natural gas, petroleum and coal burn. Furthermore, all manufacturing plants, industries and automobiles emit toxic pollutants like carbon dioxide, nitrogen oxide and sulphur dioxide among others, contributing to generation of acid rain [3]. Air pollution is also present in rural areas, as dust flies in the field at the time of farming and toxic gases are emitted by tractors [2]. Furthermore, the…

A fixed prosthesis for one tooth or even full mouth rehabilitation is been commonly certified for their reliability and durability. Despite of the conservative procedures of crown preparations, obstacles may occur in each step leading to pulpal exposure. In the past, endodontic treatment or even extraction of the tooth was the only solution to pulpal complications. A recent update shows that pulp capping that resists the death of the exposed or nearly exposed pulp can be explication to pulpal…

There are five common ways to predict the product of chemical changes. They are synthesis (composition), decomposition, single replacement, double replacement, and combustion. Each can be used for different types of problems based on the equation of experiment presented to you. They can also be found using observations throughout the experiment. You use these base guidelines to write a well balanced equation with physical states and all of the reactants and products that are produced. Our…

combined. Our main concern should be with the ground-level ozone. Ground-level ozone is created by the chemical reactions between oxides of nitrogen and volatile organic compounds in the presence of sunlight. The outbursts from industrial facilities and electric utilities, motor vehicle exhaust, gasoline vapors, and chemical solvents are some of the major foundations of oxides…

The second most abundant element in the Earth’s crust other than oxygen is silicon which if by mass is around 25.7g or 23%. However in nature, silicon never exist as a free or pure element but instead it mostly combines with the most abundant element in the Earth’s crust, oxygen, hence producing silica (SiO₂) or silicate minerals. The most prominent charge of Si in the crust is +4 rather than +2 which involve a silicon atom to bond in a tetrahedral manner with 4 other oxygen atoms giving rise to…