b) Write balanced equations for the following reactions: i) The complete combustion of pentane. ii) The incomplete combustion of pentane iii) The complete combustion of heptaneTL iv) The incomplete combustion of heptane c) Explain why the incomplete combustion of alkanes is dangerous. d) Outline the environmental impacts of burning fossil fuels such as the alkanes. Include an explanation of how these impacts can be mitigated. (max 300 words) 2. The alkanes will react with halogens in photochemical reactions to produce haloalkanes. a) What is a photochemical reaction? b) Use the formation of chloromethane from methane and chlorine in the presence of UV light, to explain the three stages involved in these photo chemical reactions. c) Give the equation for the overall reaction.

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