Zinc oxide

Discovered as a deficiency in the early 60’s, the chemical element zinc serves multiple roles in the body. Zinc travels through the body by protein which assists other proteins with metabolism. Moreover, zinc play a role in growth, development, behavior, and learning. In addition, zinc aids hormones such as thyroid and insulin. Zinc deficiency remain common in developing countries while less common in the United States…

Zinc and Immunity Various aspects of immune system are affected due to zinc (6,7,8). For normal development and function of cell mediated innate immunity, neutrophils and natural killer cells, zinc is essential element. The deficiency also affects the macrophages. The deficiency also affects adversely the growth and function of T and B cells. Besides zinc is an essential element needed for the synthesis of DNA, transcription of RNA, and activation of cells. Cytokines are adversely affected in…

Abstract: In this lab our main objective is to find the empirical formula of MgO, magnesium oxide. To do this first we have to make sure when we burn Mg in the crucible and it reacts to with O. This lab experiment Mg is complicated by another factor. Mg is so reactive that it reacts with N in the air so some of the Mg which is suppose to react with O will react will N instead. This obstacle can be overcome by simply adding water to the Mg3N2 to yield MgOH2 and NH3. This will undo the reaction so…

science behind tattoos. He found out that present days’ companies used pigments that are made of ion oxides (rust) that account for the black, red and browns. The formulas are Iron Oxide Red: Fe2O3, Iron Oxide Black: FeO · Fe2O3, and Iron Oxide Yellow: FeO(OH). For more exotic colors, heavy metals were used such as cadmium (red, orange, yellow), zinc (yellow, white), and cobalt (blue). Zinc oxide an inorganic compound with the formula ZnO. ZnO is a white power that is insoluble in water, and…

“Magnesium was discovered by Sir Humphrey Davy in England (1755). Sir Humphrey Davy also discovered MgO and HgO. The original name of Magnesium is Magnesia from the Greek word. In 1618, a farmer at Epsom in England gave his cows water from a well, but the cows refused to drink because of the water’s bitter taste. However, the farmer noticed the water seemed to heal scratches and rashes. The words spread out. Eventually it was recognised to be magnesium sulphate, MgSO4. Until 1755, it recognized…

The aim of this experiment was to determine the percentage composition of magnesium and oxygen in magnesium oxide and evaluate if the composition varies or remains constant. To test this, magnesium was heated and made to react with the oxygen gas in the atmosphere. This reaction formed the ionic compound, magnesium oxide. The percentage composition was later calculated based on the results of the experiment as shown in the above calculations, Figure 4. These results were compared to the expected…

Some issues regarding emissions include the Volkswagen Scandal which involved the German company activating emission controls to meet laboratory test standards with nitrogen oxides, but in real driving emit up to 40x more; test manipulation is a growing problem in the world today (EPUK 1). As a result of test manipulation, millions of vehicles on the roads in the US and all over the world are operating without properly certified…

In particular, selecting noble electrode materials is the hottest topics in the LIB field. Among them, bulk metal oxide such as Fe2O3, SnO2, ZnO, and In2O3 are promising material owing to their high theoretical capacity (~1000 mAh g-1), which considerable exceeds those of commercial graphitic anodes (372 mAh g-1).7–11 However, low electrical conductivity, huge…

greenhouse gases are carbon dioxide, methane, and nitrus oxide, which are all produced by animal agriculture. Carbon dioxide is one of the more common greenhouse gases, but methane is twenty times more powerful and nitrus oxide over three-hundred times more powerful. The United Nations have reported that animal agriculture is responsible for eighteen percent of all greenhouse gas emissions worldwide. Animal agriculture is the largest emitter of nitrous oxide, generating sixty-five percent of the…

The software activated full emissions controls during testing but reduces the effectiveness during regular driving. As a result, the cars emit nitrogen oxides at up to 40 times more than the allowable standard. The software enables cars to get better fuel economy at the cost of higher nitrogen oxide emissions (Boston et al., 2015). Volkswagen tried to sell their cars saying their cars had better performance and lower emissions but they did not mention the nitrogen emissions…