If the height of mercury in a barometer at 0ºC is less than 760 mm Hg, then?

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Katie

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If the height of mercury in a barometer at 0ºC is less than 760 mm Hg, then?

If the height of mercury in a barometer at 0ºC is less than 760 mm Hg, then

A) the atmospheric pressure is less than standard atmospheric pressure.
B) the atmospheric pressure is greater than standard atmospheric pressure.
C) the atmospheric pressure is equal to standard atmospheric pressure.
D) the atmospheric pressure cannot be determined.
 
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