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Ch.10 - Gases
Brown - Chemistry: The Central Science 14th Edition
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232Non è quello che usi tu?Cambia libro di testo
Capitolo 10, Problema 22c

Hurricane Wilma of 2005 is the most intense hurricane on record in the Atlantic basin, with a low-pressure reading of 882 mbar (millibars). Convert this reading into (c) inches of Hg.

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1
Identify the conversion factor between millibars and inches of mercury (Hg). The standard conversion is 1 inch of Hg = 33.8639 millibars.
Set up the conversion equation using the given pressure in millibars (882 mbar) and the conversion factor. The equation will be: Pressure in inches of Hg = Pressure in mbar / Conversion factor.
Substitute the given value into the equation: Pressure in inches of Hg = 882 mbar / 33.8639.
Perform the division to convert the pressure from millibars to inches of Hg.
The result will give you the pressure in inches of Hg, which represents the low-pressure reading of Hurricane Wilma.

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Pressure Units

Pressure is a measure of force applied per unit area, commonly expressed in various units such as pascals, atmospheres, and millibars. In meteorology, millibars (mbar) are frequently used to report atmospheric pressure, where 1 mbar equals 100 pascals. Understanding these units is essential for converting between different pressure measurements.
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Conversion Factors

Conversion factors are numerical values used to convert a quantity expressed in one unit to another unit. For pressure, the conversion from millibars to inches of mercury (inHg) involves knowing that 1 mbar is approximately equal to 0.02953 inHg. Mastery of conversion factors is crucial for accurately translating measurements across different systems.
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Atmospheric Pressure and Weather

Atmospheric pressure is the weight of the air above a given point and plays a significant role in weather patterns. Low-pressure systems, like hurricanes, are associated with stormy weather and can lead to severe conditions. Understanding the relationship between pressure readings and weather phenomena is vital for interpreting meteorological data.
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Total Pressure Example