A liquid-vapor equilibrium mixture is confined in a closed system with a total volume of 1 m3. The temperature of the mixture is 350 K and the pressure is 150 kPa. The liquid has a molar volume of 8 × 10-5 m3/mol and the vapor can be modeled as an ideal gas. If there are 100 total moles, what is the number of moles in the liquid phase?
A. 51.3 mol
B. 48.7 mol
C. -51.3 mol
D. 0.414 mol
E. Only 1 degree of freedom exists in the system, but two properties are specified (T and P), so the problem is invalid/void/impossible.
A. Incorrect. Your calculations are probably correct, but you have misread the problem statement.
B. Correct. Following Example 2-1 provides the correct answer.
C. Incorrect. A negative material or molar amount is physically impossible and should never be returned as an answer to a problem. Recheck your variables to find the problem.
D. Incorrect. You have probably gotten careless with units. Redo the final calculations and carry the units through until the end.
E. Incorrect. The temperature and pressure are not being “set” by external influence (such as by laboratory equipment) but are being “measured” from the system at rest (such as by a pressure gage and thermometer). These are needed to solve the problem.
You might also like to view...
To three decimal places, find x in the accompanying figure. All dimensions are in inches.
A. 3.392 in B. 3.533 in C. 3.789 in D. 3.900 in
Economies of scale exist when the average cost to produce one unit increases as production increases
Indicate whether the statement is true or false
Abel and Family Perfumes wants to add one or more of four new products to its current line of colognes. Historically, Abel has used a 5-year project recovery period and a MARR of 20% per year. (a) Determine which of the four options the company should undertake on the basis of a present worth analysis, provided the total amount of investment capital available is $800,000. Use a hand solution, unless assigned otherwise. (b) What products are selected if the investment limit is increased to $900,000? Use a spreadsheet, unless assigned otherwise. (All cash flows are in $1000 units.)
 FIGURE 1.png)
If a mason lays 224 8-inch blocks in an 8-hour work-day, what is the number of blocks the mason averages laying per hour?
What will be an ideal response?