explain how the water in the flask change to a gas?
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When the water in the flask boils, it produces steam, which has gas molecules inside the flask that move very quickly, pushing out the air. When the balloon is placed over the opening, this fixes the amount of gas molecules inside as the same as outside so the pressures are equal
kanwaljaveddar:
there is no balloon
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Explanation: When the water vapor cools enough, the attractions between the molecules bring them together. This causes the water vapor to change state and become tiny drops of liquid water. The process of changing from a gas to a liquid is called condensation.
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