aThe hydrogen bond is a weak bond,but than van der Waals force is strong.H2O has two hydrogen atoms.The oxygen atom has two lone pairs of electrons, which is easy to other hydrogen atoms to form hydrogen bonds, so H2O can form four hydrogen bonds. [translate] ...
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Because of its facile reaction with electrons, oxygen can be used as an electron sink in physiological processes. This is applied in mitochondria, cellular organelles which are crucial for energy, in the form of ATP production. Mitochondria are the power houses of the cell. The electron transport...
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Covalent bonds form when: A) Molecules become ionized. B) Protons are lost from atom. C) Neutrons are transferred from one atom to another. D) Electrons are shares between two atoms. How many molecules can each hemoglobin carry at one time? Atoms and molecules are part of whi...
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Although culture systems present maximal oxygen concentrations of approximately 0.2 mmol O2 l−1, the blood of a healthy adult man can carry up to 9.5 mmol O2 L−1 due to the capacity of the blood protein hemoglobin to form four reversible bonds per molecule with oxygen (reference 23 in...
Oxides, such as iron oxide or rust, form when oxygen combines with other elements. Due to its electronegativity, oxygen forms chemical bonds with almost all other elements to give corresponding oxides. The surface of most metals, such as aluminium and titanium, are oxidized in the presence of ...
From a macroscopic view, the heat released by hydrogen combustion can be used as energy. From a molecular view, the reactions include several steps: breaking of the H–H and O–O bonds and formation of the H–O bond. Electron transfer also occurs in this process. Because of the picosecond...
Those epoxide groups collectively induce tension to the underlying CC bond, while the CC bond strength in the ring chain is almost balanced by the strain from the oxygen atoms; any addition of perturbations can then lead to ring opening and breaking of the CC bonds [74]. Moreover, the ...