Question 11
200 cm3 of air was passed over heated copper in a syringe several times to produce copper (II) oxide. When cooled, the final volume of air recorded was 158 cm3. Estimate the percentage of oxygen in the air.
Objective
Question details
- Exam body
- UI
- Subject
- Chemistry
- Year
- 2018/2019
- Question no.
- #11
- Type
- Objective
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