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6.3 Interpreting and interacting with earth systems

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Question 27

A glasshouse is heated by a boiler supplied with natural gas. In one week, the boiler completely burns 160 kg of methane.

CH4+2O2→CO2+2H2O \mathrm{CH_{4} + 2O_{2} \rightarrow CO_{2} + 2H_{2}O} CH4​+2O2​→CO2​+2H2​O

Relative atomic mass (ArA_rAr​): H = 1 C = 12 O = 16

What mass of carbon dioxide is released in this week?

[1]
A

120 kg

B

320 kg

C

440 kg

D

160 kg

Markscheme

6.3 Interpreting and interacting with earth systems Questions

  1. GCSE
  2. /Chemistry
  3. /6.3 Interpreting and interacting with earth systems

109 exam-style questions on OCR GCSE Chemistry 6.3 Interpreting and interacting with earth systems, covering 6.3.1 Formation and evolution of the atmosphere, 6.3.2 The greenhouse effect and climate change, 6.3.3 Sources and problems of atmospheric pollutants, and 6.3.4 Producing potable water. Each one has a worked solution and a mark scheme showing where the marks go.

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