The table below shows the different commonly used units of measuring gas pressur

Question

The table below shows the different commonly used units of measuring gas pressure. Use this table in the pressure unit conversions.

PART A- Convert 0.650 atm of pressure to its equivalent in millimeters of mercury. Express the pressure numerically in millimeters of mercury.

PART B- The pressure in car tires is often measured in pounds per square inch (lb/in.2), with the recommended pressure being in the range of 25 to 45 lb/in.2. Suppose a tire has a pressure of 25.0 lb/in.2 . Convert 25.0 lb/in.2 to its equivalent in atmospheres.Express the pressure numerically in atmospheres.

PART C- High-pressure liquid chromatography (HPLC) is a method used in chemistry and biochemistry to purify chemical substances. The pressures used in this procedure range from around 500 kilopascals (500,000 Pa) to about 60,000 kPa (60,000,000 Pa). It is often convenient to know the pressure in torr. If an HPLC procedure is running at a pressure of 1.00×108 Pa , what is its running pressure in torr? Express the pressure numerically in torr.

Unit Abbreviation 1 atm equivalent atmosphere atm 1.00 atm (exact) millimeters of mercury mmHg 760 mmHg torr torr 760 torr inches of mercury in.Hg 29.9 in.Hg pounds per square
inch (psi) lb/in.2 14.7 lb/in.2 pascal Pa 101,325 Pa

Explanation / Answer

By using the above conversions we obtain following solutions

A) 0.65 atm = 494 mmHg

B) 25 lb/in.2 = 1.7 atm

C) 1.00×108 Pa = 750061 torr

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