Single base containing compounds

When large amounts of copper deposits in boiler mbes cannot be removed with hydrochloric acid due to the relative insolubility of copper, ammonia-based oxidizing compounds have been effective. Used in a single separate stage, the ammonia sodium bromate step includes the introduction into the boiler system of solutions containing ammonium bromate to rapidly oxidize and dissolve the copper. 

Crystal growth of these compounds is complicated by the high volatility of thallium oxides and thallium-containing compounds at elevated temperatures and the toxicity of thallium. Also, the similarity in structures leads to problems controlling phase purity and samples which appear to be single crystals based on their morphology can be shown to be complicated intergrowths by X-ray diffraction studies. 

A is correct. Sodium chloride is a protolypic example of an ionic bond. In a coordinate covalent bond, both shared electrons come from the same atom for instance, a Lewis base (i.e., ammonia) or oxygen-containing compound (i.e., water). Although both shared electrons come from the same atom, a coordinate covalent bond is a single bond similar in chemical properties to a covalent bond. 

Propellants that contain nitrocellulose as the only oxidizer are referred to as single base and propellants that contain both nitrocellulose and nitroglycerine (or some other explosive plasticizer) as double base. Triple-based propellants are produced when substantial quantities of an organic, energy-producing, crystalline compound such as nitroguanidine are incorporated in double-based propellants. Triple-based propellants are unlikely to be encountered in small arms ammunition. 

Our mini data base contains two factual statements about the same compound aconitine. In a more realistic data base there will be many such cases. Specifying the same compound in several facts is somewhat redundant. It would be more economical to lump together the TLC data for a given compound in just one single statement. We would like to be able to manipulate all Rf data and TLC system codes as one piece of information and still have access to the individual entries. PROLOG supplies such a data structure, the list. A list is an ordered collection of entries, which can be addressed as a whole, and where the first entry (the head of... 

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