Solids are just vibrating and they cannot move past each other
the liquids they move freely and move past each other
Answer:
40.4 kJ
Explanation:
The gas in this problem is in a sealed tank: this means that its volume is constant, so we can use the pressure law, which states that for an ideal gas kept at constant volume, the pressure is proportional to the temperature of the gas.
Mathematically:
where, in this problem:
is the initial pressure of the gas
is the final pressure
is the initial temperature
is the final temperature
Solving for T2,
Now we can find the change in internal energy of the gas, which is given by:
where:
n = 30 mol is the number of moles
R = 8.314 J/(mol • K) is the gas constant
And substituting the values of the initial and final temperatures, we get: