A-LevelChemistryStates of matterOct/Nov 2020Paper 1 Q71 Mark
A weather balloon is filled with 12.0 kg helium. The weather balloon reaches a height of 20 km, the pressure inside the balloon is 6000 Pa and the temperature is 216 K. What is the volume of the weather balloon at this height, correct to three significant figures?
A897 dm³
B1790 dm³
C897 000 dm³
D1790 000 dm³
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of states of matter within the Chemistrysyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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