A sample of gas ina sealed container undergoes the cyclic process from state 1 to state 2 back to state 1, as shown in the PV-graph below. P Which of the following statements is true about the heating done to the sample of gas across the entire process? O Q>0 O Q<0 O Q = 0

Consider a process that uses n moles of a monatomic ideal gas operating through a Carnot cycle. The initial temperature and pressure of the gas are T1 and P1, respectively. Consider steps 1 → 2, 2 → 3, 3 → 4, and 4 → 1. In the adiabatic heating, the temperature of the gas is doubled. Write an expression for the volume V3 after this step in terms of V1.  Write an expression for P3 in terms of n, R, T3 and V3.

P Example of calculation of work P = 1 Atm V%= 1 litre iii ii P V V,12 V In this cycle the system, which is an ideal monatomic gas, undergoes first isothermal (i) then adiabatic (ii) compression steps, each of which halve the volume, then returns to its starting point via first isothermal (iii) and then adiabatic (iv) expansions, each of which double the volume. How much work is done by the system during the cycle if P, is 1 atmosphere and V, =1 litre?

The difference AS=S,- S,between the entropies of two states A and B of a system can be calculated as the integral fdQ/T, counting that: B a. A and B are in the same adiabatic b. A and B are at the same temperature c. The integral is calculated over a reversible path d.The system is thermally insulated e. Friction in the process is disregarded

A certain gasoline engine is modeled as a monatomic ideal gas undergoing an Otto cycle, represented by the p-V diagram shown in the figure. The initial pressure, volume, and temperature are p1 = 1.05 × 105 Pa, V1 = 0.035 m3, and T1 = 290 K, respectively. a)The first step in the Otto cycle is adiabatic compression. Enter an expression for the work performed on the gas during the first step, in terms of V1, V2, and p1.  b) Calculate the temperature of the gas, in kelvins, at the end of the first step.  c)The fourth and last step in the Otto cycle is isochoric cooling to the initial conditions. Find the amount of heat, in joules, that is discharged by the gas during the fourth step.

View Policies Current Attempt in Progress Air is compressed in a piston-cylinder assembly from p₁ = 25 lbf/in², T₁ = 500°R, V₁ = 9 ft³ to a final volume of V₂ = 1 ft3 in a process described by pv¹.25 = constant. Assume ideal gas behavior and neglect kinetic and potential energy effects. Using constant specific heats evaluated at T₁, determine the work and the heat transfer, in Btu.

An ideal gas undergoes the thermodynamic process shown in the ??PV diagram in the figure. Determine whether each of the values (a) Δ?ΔU, (b) ?W, (c) ?Q for the gas is positive, negative, or zero. (Note that ?W is the work done ??on the gas.) Hint: First use the ideal gas law to find the initial and final temperatures in terms of ?0P0 and ?0V0 and determine if the final temperature is greater than, less than, or equal to the initial temperature.   (a) ΔU A.+ B.- C.0   (b) W A.+ B.- C.0   (c) Q A.+ B.- C.0

A sample of gas in a sealed container undergoes the cyclic process from state 1 to state 2 back to state 1, as shown in the PV-graph below. 1 → V Which of the following statements is true about the heating done to the sample of gas across the entire process? Q > 0 < 0 Q = 0 O O