1. Nitrogen is compressed to a density of 4 kg/m 3 at a temperature of 70◦C. What is the pressure of the gas? 2. Use the definition of E V and perfect gas law to show that at constant temperature E V...

1. Nitrogen is compressed to a density of 4 kg/m³
at a temperature of 70◦C. What is the pressure of the gas?

2. Use the definition of E_V
and perfect gas law to show that at constant temperature E_V
= p.

3. A cubic meter of oxygen at an absolute pressure of 100 kPa is compressed isentropically to two-thirds of its original volume. What is the final pressure?