Which of the following pressure measurements is equivalent to a pressure of 152 mmHg?0.2 atm20.3 kPa76 torr

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11ecba2d_121d_5784_a3bf_7f1187353cb2_MD0008_00 Pressure P is defined as the amount of force F applied per unit of area A, which is expressed mathematically as 11ecba2d_121d_5785_a3bf_8f49b1c20d02_MD0008_00 In the SI system, the standard unit of pressure is the pascal (Pa), where 1 pascal is defined as the pressure exerted by a force of 1 newton (N) applied over an area of 1 square meter (m²): 11ecba2d_121d_5786_a3bf_6d9fcfe55491_MD0008_00 Because the pascal is a relatively small unit of pressure, measurements in pascals are often stated in kilopascals (kPa). The pascal unit is useful for relating pressure to other derived units that involve base units of mass, length, and time; however, measurements of pressure are often stated in other common units such as atmospheres (atm), millimeters of mercury (mmHg), or torr. These common units of pressure are related as follows: 11ecba2d_121d_5787_a3bf_67b52f7ce606_MD0008_00 1 atm=760 mmHg=760 torr=101,325 Pa=101.325 kPa These relationships between units of pressure can be used to make conversion factors to convert pressure measurements from one unit to another. Accordingly, a pressure of 152 mmHg can be converted and expressed in units of atm, torr, or kilopascals, as follows: 11ecba2d_121d_7e98_a3bf_ffeba24f4619_MD0008_00 11ecba2d_121d_7e99_a3bf_7f17f242e338_MD0008_00 11ecba2d_121d_7e9a_a3bf_6529b8ee9bd9_MD0008_00 Therefore, a pressure of 152 mmHg is equivalent to 0.2 atm and 20.3 kPa (Numbers I and II). (Number III) Torr is just another name for the unit millimeters of mercury (mmHg). As such, a pressure measurement given in mmHg will be the same numeric value in units of torr. A pressure of 76 torr is less than (not equivalent to) a pressure of 152 mmHg. Educational objective: Pressure measurements may be stated in a variety of units, including pascals (Pa), kilopascals (kPa), atmospheres (atm), millimeters of mercury (mmHg), and torr. These units can be converted from one to another by using appropriate conversion factors, given that 1 atm = 760 mmHg = 760 torr = 101,325 Pa = 101.325 kPa.

Which of the Following Pressure Measurements Is Equivalent to a Pressure