Its either C or D I’m stuck on this.
I think because its the only one to be liquid at normal temperatures.
Examination by a test; experiment, as in chemistry, metallurgy, etc.
The Arrhenius definition of acid-base reactions, which was devised by Svante Arrhenius, is a development of the hydrogen theory of acids. ... An Arrhenius base is a substance that dissociates in water to form hydroxide (OH -) ions. In other words, a base increases the concentration of OH - ions in an aqueous solution.
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