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How can you determine the boiling point of a substance?
How does the atmospheric pressure affect the boiling point of a substance?
Atmospheric pressure affects the boiling point because at higher altitudes, the air pressure is lower and therefore the boiling point of a substance is lower. This is because there is less pressure on the liquid to keep it from boiling. Conversely, at lower altitudes where the air pressure is higher, the boiling point is raised because there is more pressure on the liquid to keep it from boiling.