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Thermodynamics and Ideal Gases

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Wize University Physics Textbook (Master) > Thermodynamics

Ideal Gases and First Law of Thermodynamics

4 Activities

An ideal gas at 30.0 C and pressure of 2 × 105 Pa is in a container having a volume of 1.40 L.
  1. Determine the number of moles of gas in the container.
  2. The gas pushes against a piston, expanding to twice its original volume, while the pressure falls to atmospheric pressure. Find the final temperature.
More Ideal Gases and First Law of Thermodynamics Questions:
Thermodynamics: Work Done During Acid Digestion of Magnesium
A 10.0 g piece of Mg(s) is deposited in a container with a vast excess of HCl(aq). A reaction takes place forming hydrogen gas and Magnesium Chloride.
a) Write a balanced chemical reaction for the transformation
b) Calculate the work done by the system as a consequence of the reaction, if Pex = 1.1 atm and T = 298.15 K. You may assume ideal behaviour.
Thermodynamics
2.3 moles of an ideal gas initially at -12oC and 16 atm underwent a complete expansion against a constant external pressure of 1atm and did 1.1kJ of work. Calculate ΔE, Δ𝐻, 𝑎𝑛𝑑 𝑞 for this process.
A 2.00 mole sample of a monoatomic ideal gas is initially at 1.00 L and 1.00 atm. Calculate the total q, w, ΔE{\small \Delta\text{E}}and ΔH{\small \Delta \text{H}}when the final conditions are 0.500 L and 5.00 atm along the pathway where the volume is compressed first.
[Do NOT include units in your answers]
Thermodynamics: Reaction of Mg with HCl
A 10.0 g piece of Mg(s) is deposited in a container with a vast excess of HCl(aq). A reaction takes place forming hydrogen gas and Magnesium Chloride. Write a balanced chemical reaction for the transformation and calculate the work done by the system as a consequence of the reaction, if Pex = 1.1 atm and T = 298.15 K. You may assume ideal behaviour.
How much work is performed in Joules when 3.00 mols of N2(g) expands against 1 atm of external pressure via heating from 298 K to 498 K at constant pressure of 1 atm?
Heat is an
extensive
property while temperature is
intensive
property
Heat is related to
total thermal
energy while temperature is related to
average thermal
energy
The internal energy of n moles of an ideal gas depends on
A gas in a cylinder with a moveable piston is heated with 50 J of energy, causing the piston to move rise. If the thermal energy of the system increases by 30 J, how much work is done by the gas?