Please answer the observation of this activity.
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Answer:
ya I can help you..
Explanation:
it is so because in the bottle without there is already air inside the bottle so when your friend tries to blow air in balloon he was not able because there is no space inside the bottle so that the balloon can expand.
Your balloon gets filling because the air in the bottle getting escape from the holes of bottle and automatically space is making for expanding balloon.
Hope it will help you
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