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9.2 Carbon dioxide and methane as greenhouse gases

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Question 10

A community kitchen is comparing two meal-delivery systems. System R uses a reusable insulated box 30 times before disposal. System S uses a single-use fibre box for each delivery. The mass of greenhouse gases released at each stage is shown in the table.

Calculate the mass of greenhouse gases released per delivery for each system. Use your answers to decide which system has the smaller carbon footprint per delivery. Show your working.

Stage of the life cycleMass of greenhouse gases released by system R (g)Mass of greenhouse gases released by system S (g)
Making the container429
Using the container for one delivery62
Disposing of the container1218
[3]
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9.2 Carbon dioxide and methane as greenhouse gases Questions

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

73 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, 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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