(a) Coloured extracts of grass dissolved in ethanol. - Paper chromatography.
(b) Kerosine from Crude oil. – Fractional distillation
(c) Paraffin from water. - separating funnel
(d) Iron filings from Sulphur powder. – magnet
(e) Ammonium chloride from Sodium chloride. – sublimation
(f) Seawater, to obtain salt. – Evaporation.
(g) Blue Copper Sulphate crystals from aqueous copper sulphate. A- Crystallisation – some of the water must be evaporated for crystals to form on cooling the saturated solution to room temperature.
Kavungya answered the question on March 25, 2019 at 07:27
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ii) What is the name of process X
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iii) On the diagram label the cathode.
iv) Write ionic equations for the reactions that took place at the anode
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Mass of crucible, lid and metal m = 5.352g
Mass of crucible, lid, metal oxide = 5.400g
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(ii) Oxygen.
(b) Determine the empirical formula of the meat oxide.
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