B: 0.50
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In an experiment, 10 cm³ of an organic compound, J, in the gaseous state is reacted with an excess of oxygen. Steam, …
Several ores of copper contain both copper(II) carbonate and copper(II) hydroxide. This combination is called basic c…
It is possible that ores containing basic copper(II) carbonate also contain water of crystallisation. The formula of …
An infra-red spectrum shows a broad peak at 3000 cm⁻¹ and a strong peak at 1710 cm⁻¹. Which substance could have prod…
In which pairs do both species have the same number of unpaired electrons in p orbitals? 1 O and Cl⁺ 2 F⁺ and Ga 3 N …
In which reactions is the underlined element or compound reduced? 1 NaClO + H₂O₂ → O₂ + NaCl + H₂O 2 2NH₃ + 2Li → 2Li…