# Question

A sample of monatomic ideal gas occupies 5.00 L at atmospheric pressure and 300 K (point A in Figure P21.67). It is heated at constant volume to 3.00 atm (point B).

Then it is allowed to expand isothermally to 1.00 atm (point C) and at last compressed isobarically to its original state.

(a) Find the number of moles in the sample.

(b) Find the temperature at points B and C and the volume at point C.

(c) Assuming that the molar specific heat does not depend on temperature, so that Eint # 3nRT/2, find the internal energy at points A, B, and C.

(d) Tabulate P, V, T, and Eint for the states at points A, B, and C.

(e) Now consider the processes A →B, B→ C, and C→ A. Describe just how to carry out each process experimentally.

(f) Find Q, W, and ΔEint for each of the processes.

(g) For the whole cycle A→ B→ C→ A find Q, W, and ΔEint

Then it is allowed to expand isothermally to 1.00 atm (point C) and at last compressed isobarically to its original state.

(a) Find the number of moles in the sample.

(b) Find the temperature at points B and C and the volume at point C.

(c) Assuming that the molar specific heat does not depend on temperature, so that Eint # 3nRT/2, find the internal energy at points A, B, and C.

(d) Tabulate P, V, T, and Eint for the states at points A, B, and C.

(e) Now consider the processes A →B, B→ C, and C→ A. Describe just how to carry out each process experimentally.

(f) Find Q, W, and ΔEint for each of the processes.

(g) For the whole cycle A→ B→ C→ A find Q, W, and ΔEint

## Answer to relevant Questions

This problem can help you to think about the size of molecules. In the city of Beijing a restaurant keeps a pot of chicken broth simmering continuously. Every morning it is topped up to contain 10.0 L of water, along with a ...A gas consists of a mixture of He and N2 molecules. Do the lighter He molecules travel faster than the N2 molecules? Explain.Which is denser, dry air or air saturated with water vapor? Explain.A heat engine takes in 360 J of energy from a hot reservoir and performs 25.0 J of work in each cycle. Find (a) The efficiency of the engine and (b) The energy expelled to the cold reservoir in each cycle.A Carnot engine has a power output of 150 kW. The engine operates between two reservoirs at 20.0°C and 500°C. (a) How much energy does it take in per hour? (b) How much energy is lost per hour in its exhaust?Post your question

0