2 A student carried out an experiment to measure the percentage oxygen in
the air by using the rusting of iron. The experimental set-up is shown below,
The initial reading on the measuring cylinder was 95 cm, They let the
apparatus for 2 days and the new reading on the measuring cylinder was
80 cm
-iron filings
-measuring cylinder
air
-water
90
100
a Calculate the percentage oxygen in the air using this data.
Answers: 1
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2 A student carried out an experiment to measure the percentage oxygen in
the air by using the rust...
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