The volume of a gas measured at a pressure of 100,000 Pa and a temperature of 300 K is equivalent to 10 ml. Determine the volume this sample will occupy at a pressure of 200,000 Pa and a temperature of 250 K.

The temperature of a 50g mass of a simple pure body is varied from 20°C to 60°C under the effect of 25 J. What is the value of the mass heat capacity of this body?

The unit of mass heat capacity is:

What factor determines the average velocity of particles in a gas?

What happens to the volume of a gas when its temperature increases at constant pressure?

The entities of a gas considered as “perfect”:

Wrong answers will be penalized.

The internal energy U of a macroscopic system is equal to the sum of the energies :

Incorrect answers will be penalized.

An isobaric fluid transformation is performed. The volume is considered as a state function depending only on temperature. The total volume differential is written as:

How many moles of helium gas, assumed to be perfect, occupy a volume of 50 mL at a temperature of 20°C and a pressure of 200000 Pa? 

Given : R = 8.314 J·K⁻¹·mol⁻¹.

Consider the following class hierarchy:

As well as the following Test class containing the main method: 

For each instruction presented below, indicate the output displayed when it is executed in the main method.