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9.2 Carbon dioxide and methane as greenhouse gases

9.2 Carbon dioxide and methane as greenhouse gases

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Question 4

Methane is a potent greenhouse gas released from agricultural activities and decomposing waste.

a.

Explain how greenhouse gases maintain temperatures on Earth that support life, making reference to short-wavelength and long-wavelength radiation.

[2]
b.

The average percentage by mass of methane in a sample of air collected above a landfill is 0.12%. Calculate the mass of methane in 450 kg of this air. Give your answer in grams.

[2]
Markscheme

9.2 Carbon dioxide and methane as greenhouse gases Questions

  1. GCSE
  2. /Chemistry
  3. /9.2 Carbon dioxide and methane as greenhouse gases

13 exam-style questions on AQA GCSE Chemistry 9.2 Carbon dioxide and methane as greenhouse gases, covering 9.2.1 Greenhouse gases, 9.2.2 Human activities which contribute to an increase in greenhouse gases in the atmosphere, 9.2.3 Global climate change, and 9.2.4 The carbon footprint and its reduction. Each one has a worked solution and a mark scheme showing where the marks go.

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