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Joyce Huang asked in Science

A deflated balloon was placed in an air-tight container with a syringe connected to it. When the plunger of the syringe was pulled downwards, the balloon inside the container inflated. Explain how the balloon was able to inflate as the plunger was pulled downwards.

Thank You
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Surabhi Lunia answered this

Dear Student,

When a plunger was pulled downwards, air inside the jar begins to pump out then a vacuum is created inside the jar, so air pressure is more towards the balloon than the jar, therefore, air will try to come out because of the diffusion phenomenon from the balloon and it will inflate.

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