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The figure below shows a gas jar Q containing nitrogen oxide gas which is brown in colour and is denser than air and a jar P which contains air. When the cover R is removed, nothing visible happens in the first few minutes (about 10 minutes)

(a) Explain why nothing visible happens in the first few minutes.


(b) Explain what you would observe after, say 30 minutes? What do you think will have happened.​

Sagot :

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