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Define rate of a reaction.
(2018)
Consider compounds A, B, C and D, all of which have molecules of similar size and mass.
Phosgene (COCl2) is a toxic gas that was used as a chemical weapon in World War 1.
Describe how you could demonstrate that ethene readily undergoes an addition reaction with bromine water
Bohr said that the electron in a hydrogen atom could only occupy certain orbits n = 1, 2, 3, etc, with corresponding energy levels E1, E2, E3, etc