Long answer·Standard multi-step (3/5)·Calculator allowed
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Question
One mole of a monatomic ideal gas and one mole of a diatomic ideal gas at ordinary temperature are separately heated by at constant volume. Take and ignore vibrational modes for the diatomic gas.
Total: 4 marks
(a) Find the heat supplied to the monatomic gas. (1 mark)
(b) Find the heat supplied to the diatomic gas. (1 mark)
(c) Find the total heat supplied to both gases. (1 mark)
(d) Explain why the diatomic gas needs more heat for the same temperature rise. (1 mark)
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