(i) Gas /vapour
(ii) B - It has the second lowest boiling point thus second lowest molecular mass
(iii) C is impure since it boils over a range of temperature
(iv) It is boiled heated and the vapour of the components condense at different temperatures
(v) - Liquid air
- Crude oil
maurice.mutuku answered the question on October 18, 2019 at 05:18
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