Short 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
Methane burns according to . A sample contains methane.
Total: 4 marks
(a) Find the moles of methane. (1 mark)
(b) Find the moles of oxygen required. (1 mark)
(c) Find the mass of carbon dioxide formed. (2 marks)
Something wrong with this item?