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Hydrogen is the simplest, cleanest and most abundant element in the universe. Fuel cells generate electricity through an electro-chemical process that combines hydrogen and oxygen to produce pure water as a by-product. Winning technology Organisations who operate in off-grid environments are looking ...
The electron transport chain is the final step of aerobic cellular respiration. During aerobic cellular respiration oxygen and glucose are used to make water, carbon dioxide and ATP. Answer and Explanation:1 Oxygen is needed in the electron transport chain because it is the final electron acceptor....
A. Why do the group 8A elements rarely react with other elements? B. Why do we no longer accept Dalton's statement that all atoms of an element must be exactly alike? What are some of the physical properties that distinguish the metallic elements from the nonmetals? Are these properties ...
There is debate over the reliability of non-animal sources of Vitamin B12. It was found that people on vegan diets had lower levels of serum B12 levels than the general population. In particular, infants breast-fed or fed a macrobiotic diet directly are at a great risk of developing B12 de...
Adequate dissolved oxygen is necessary for good water quality. Oxygen is a necessary element to all forms of life. Natural stream purification processes require adequate oxygen levels in order to provide for aerobic life forms. As dissolved oxygen levels in water drop below 5.0 mg/l, aquatic life...
First: what is combustion? Combustion is the process of burning something, and it requires three elements: a fuel source, like tobacco; oxygen, found in air; and enough heat to kickstart the self-sustaining, heat-generating reaction. During combustion, in ideal conditions, hydrocarbons and oxyge...
Two short questionsThe compound is as such (the "-" depicts a bond):O2 N - aromatic ring - OH1) I was told one of the oxygen has a double bond, but why? How would I find that out? 2) Also, I was told the charge of Nitrogen is +(+1). Why is it positive + charge on ...
What makes oxygen electronegative is its valence shell. Ã’šÃ‚ Oxygen has 6 valence electrons so it can still attract 2 more electrons to fill the valence shell. If a certain element has empty valence shell, then its electronegativity lowers. Ã’šÃ‚ Ã’šÃ...
Why is SO_2 non polar whereas SO_3 is polar? Why do we use prefixes only in covalent compounds? Explain the principle of gaseous exchange in the lungs. Why do metals and non-metals bond? Explain how the colloidal state may be an aid to chemical reactions taking place in protopla...