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molecule where the ratio of atoms is 1 : 5, for example PCl5
a chemical reaction in which heat, pressure or a catalyst is used, singly or in combination, to...
matter cannot be created or destroyed in a chemical reaction.
two species that differ from each other by a single proton (H+ ion). An acid becomes its...
an electrochemical cell has two half-cells: one is where oxidation takes place and the other...