Problem

Nitrogen monoxide,

\text{NO}(\text{g})

, reacts with oxygen,

\text{O}_2(\text{g})

, to form one gaseous product X. Syringe A contains

50 \text{ cm}^3

of nitrogen monoxide. Syringe B contains

50 \text{ cm}^3

of oxygen gas. In the experiment,

5.0 \text{ cm}^3

portions of oxygen were pushed from syringe B into syringe A. After each addition, the tap was closed. After the gases had returned to their original temperature, the total volume of gases remaining was measured. The results are shown graphically below.

Volume of oxygen added / $\text{cm}^3$	Total volume of gases in syringe / $\text{cm}^3$
0	100
5	95
10	90
15	85
20	80
25	75
30	75
35	75
40	75
45	75
50	75

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