When the mouth of an inflated balloon is left open, the entire air that was blown into the balloon escapes. This is because of ____.

the acceleration due to gravity.

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air pressure difference

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the air inside it was hot.

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the air inside it was cold.

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Solution

The correct option is B
air pressure difference

When a balloon is inflated with air and its mouth is closed, the air pressure inside it will be more as compared to the air pressure outside. And when the mouth is opened, due to this air pressure difference, the air molecules start moving from the higher pressure region(inside the balloon) to a low-pressure region(outside the balloon). This is how the entire air that was blown into the balloon will escape.

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