IGCSE
EDEXCEL
Science
10 Marks
QP-Science-202205-P1C · Question 4
Question (excerpt):
8 4 A student uses the reaction between iron and oxygen to find the percentage of oxygen in air. The diagram shows the apparatus the student uses. air wet iron powder cm3 100 90 80 70 60 50 40 …
8 4 A student uses the reaction between iron and oxygen to find the percentage of oxygen in air. The diagram shows the apparatus the student uses. air wet iron powder cm3 100 90 80 70 60 50 40 …
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