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A-LevelChemistryChemical energetics9701/12 · Oct/Nov 2025 · Q91 Mark

When 0.47 g of a hydrocarbon is completely burnt in air, the energy released heats 200 g of water from 23.7 °C to 41.0°C. What is the amount of energy absorbed, in Joules, by the water?

A0.47 x 4.18 × 17.3
B0.47 × 4.18 × (273 + 17.3)
C200 × 4.18 × 17.3
D200 × 4.18 × (273 + 17.3)

✓ Correct answer

C: 200 × 4.18 × 17.3

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About this question

Topic
Chemical energetics, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source
A-Level Chemistry, Oct/Nov 2025 Paper 1 Variant 2, question 9.

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