Answer: A. Water
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Which of these substances is not an element?A. WaterB. Hydrogen C. Aluminum D. Iron Scientific process assignment
Description. The combining capacity or affinity of an atom of a given element is determined by the number of hydrogen atoms that it combines with. In methane carbon has a valence of 4; in ammonia nitrogen has a valence of 3; in water oxygen has a valence of 2; and in hydrogen chloride chlorine has a valence of 1.Chlorine as it has a valence of one can be substituted for hydrogen .
Passivation in physical chemistry and engineering refers to a material becoming "passive " that is less affected or corroded by the environment of future use. Passivation involves creation of an outer layer of shield material that is applied as a microcoating created by chemical reaction with the base material or allowed to build from spontaneous oxidation in the air.
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Hydrogenation is a chemical reaction between molecular hydrogen (H 2) and another compound or element usually in the presence of a catalyst such as nickel palladium or platinum.The process is commonly employed to reduce or saturate organic compounds .Hydrogenation typically constitutes the addition of pairs of hydrogen atoms to a molecule often an alkene. ...
Sodium amalgam is produced as a byproduct of the chloralkali process and us...
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