Chemistry Unit C1 Worksheet - Study And Revision Pack (Foundation Paper) Page 6
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34Q3.
* Experiments can be carried out to find the volume of oxygen in a given volume of air.
When hot, copper reacts with oxygen.
In one experiment the following apparatus is used.
3
At the start of the experiment, 100 cm
of air is in gas syringe A.
The air is passed backwards and forwards over the heated copper.
3
3
Describe how the apparatus can be used to show that the 100 cm
of air contained 21 cm
of
oxygen.
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