2.1. Isothermal Process and Perfect Gas

Try these first

1. 1.

   What does a barometer measure?

   Hint

   Think about what surrounds us all the time.

2. 2.

   Define gauge pressure.

   Hint

   It's pressure without counting the atmosphere.

3. 3.

   What is the primary function of a barometer?

   • Measure temperature
   • Measure atmospheric pressure
   • Measure volume

   Hint

   Think about how weather systems work.

4. 4.

   True or False: An isothermal process involves a change in temperature.

   • True
   • False

   Hint

   Recall the definition of isothermal.

5. 5.

   A manometer is connected to a tank of air at a pressure of 2 MPa. How high would the water rise in a manometer? Assume the density of water is 1000 kg/m³.

   Hint

   Remember to keep units consistent.

6. 6.

   Two different gases, Helium and Nitrogen, are kept at similar volumes and temperatures. If the molecular mass of Helium is significantly lower, how would this differ in terms of pressure? Explain mathematically.

   Hint

   Apply the formula PV = nRT and consider the relationship between pressure and molecular mass.