1 answer

Under normal conditions, how could you reduce air pressure?

Question:

Under normal conditions, how could you reduce air pressure?

Answers

In an air-tight container, permit some of the water to drain away without letting air back in to take its place.

Explanation:

Here is series that might help. This assumes we have a container with an air-tight lid.enter image source here
Step A
Fill air-tight container with water.

Step B
Invert the air-tight container.

Step C
Loosen the lid allowing some of the water to escape and creating a partial vacuum.

Step D
Re-tighten the lid before all the water has escaped.

Step E
Return the container to its upright condition without loosening the lid and apply heat.

Note: This will only be partially successful since once the water is heated the vapor will quickly restore the internal air pressure to and above normal.
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Depending upon what is meant by "in normal conditions"
you might be able to take your pot of water to the top of a mountain to boil it. Under "normal conditions" the air pressure at the top of a mountain will be lower than at the bottom of the mountain.

.

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