1.2. Calculating Local Atmospheric Pressure

Try these first

1. 1.

   What is the atmospheric pressure when R is 750 mm of Hg?

   Hint

   Use the formula P = S * R.

2. 2.

   What is a barometer used for?

   Hint

   Think about the instruments in weather stations.

3. 3.

   What does a barometer measure?

   • Weather patterns
   • Atmospheric pressure
   • Temperature

   Hint

   Think of where you would use a barometer.

4. 4.

   Is gauge pressure the absolute pressure?

   • True
   • False

   Hint

   Consider what zero pressure means in a gauge.

5. 5.

   You have a fluid with a density of 13.6 g/cm³ in a barometer. Calculate the local atmospheric pressure if the column height is 760 mm.

   Hint

   Remember to convert units properly.

6. 6.

   A gas is compressed isothermally from 10 L to 5 L at a constant temperature of 300 K. If the initial pressure is 1 atm, what will be the final pressure?

   Hint

   Think about the ratio of volumes.