Multiple Choice
Which of the following best explains why atmospheric pressure decreases as altitude increases on Earth?
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7. Gases
Pressure Units
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If the atmospheric pressure is 715 mm Hg, what is the pressure in torr?
A
1.00 torr
B
715 torr
C
101.3 torr
D
760 torr
Verified step by step guidance1
Understand that the problem asks to convert atmospheric pressure from mm Hg to torr.
Recall that 1 mm Hg is exactly equal to 1 torr, so the units mm Hg and torr are equivalent in magnitude.
Since the numerical values are the same for mm Hg and torr, the pressure in torr is numerically equal to the pressure in mm Hg.
Therefore, the pressure of 715 mm Hg can be directly expressed as 715 torr without any calculation.
Conclude that the pressure in torr is 715 torr.
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