A gaseous material l, XY(g) , dissociates to some extent to produce X(g) and Y(g).

                                    XY(g) ↔ X(g) + Y(g)     K_c = 5.53 x 10^-3

A 2.00 gram sample 0f XY(M_w = 165g/mol) is placed in a container with a movable piston at 25^oC. The atmospheric pressure is 0.967 atm. Assume the piston is massless and frictionless. As XY(g) dissociates the piston moves keeping the pressure constant. Assuming ideal behavior, calculate the following:

a- The volume of the container at equilibrium

b- The percent dissociation of XY

c- The density of the gas mixture at equilibrium

A mass of 5 kg of saturated liquid vapor mixture of water is contained in a piston cylinder device at 100 kPa, initially 2 kg of water is in the liquid phase and the rest is in the vapor phase.Heat is now transferred to the water and the piston which is resting on a set of stops, starts moving when the pressure in side reaches 200 kPa, heat transfer continues until the total volume increases by 20%, determine a. the initial and final temperature b. the mass of liquid water when the piston first starts moving c. the work done during the process d. show the process in P-V diagram

Imagine an isolated, 10-liter cylinder containing one mole of ideal gas held in the left five liters of the cylinder by a piston, initially locked in place. The right half of the cylinder is evacuated; the entire system is maintained at constant temperature. When the piston is freed to move frictionlessly, we could track the motion of the piston and the volume in 1-liter increments. Calculate the change in entropy (in J mol^-1 K^-1) of the gas upon expansion after each of the five 1-liter increments. Demonstrate that the total entropy is indeed maximized when the expansion is complete. Make a table.

Imagine an isolated, 10-liter cylinder containing one mole of ideal gas held in the left five liters of the cylinder by a piston, initially locked in place. The right half of the cylinder is evacuated; the entire system is maintained at constant temperature. When the piston is freed to move frictionlessly, we could track the motion of the piston and the volume in 1-liter increments. Calculate the change in entropy (in J mol^-1 K^-1) of the gas upon expansion after each of the five 1-liter increments. Demonstrate that the total entropy is indeed maximized when the expansion is complete. Make a table.

500 g of saturated liquid water is contained in a piston-cylinder arrangement. The inside diameter of the cylinder is 100 mm. The water is heated at a constant pressure of 150 kPa until it becomes saturated vapor. Determine (a) the distance through which the piston is raised, and (b) the amount of energy transferred to the water

You need to be ready at any time to explain your business to a potential investor. Entrepreneurs
have to be able to “pitch” or explain their ideas to investors quickly and effectively. Writing an
“Elevator Pitch” is a great way to do that. Imagine you are in an office building, and an investor
walks into the elevator with you. You would need a one (1)- minute speech that effectively and
dynamically explains your business idea and why it will be successful?

You need to be ready at any time to explain your business to a potential investor. Entrepreneurs
have to be able to “pitch” or explain their ideas to investors quickly and effectively. Writing an
“Elevator Pitch” is a great way to do that. Imagine you are in an office building, and an investor
walks into the elevator with you. You would need a one (1)- minute speech that effectively and
dynamically explains your business idea and why it will be successful?

A 621-kg elevator starts from rest and moves upward for 3.20 s with constant acceleration until it reaches its cruising speed, 1.65 m/s.

(a) What is the average power of the elevator motor during this period?
hp

(b) How does this amount of power compare with its power during an upward trip with constant speed? (Give the power during an upward trip with constant speed.)
hp

A 674-kg elevator starts from rest and moves upward for 2.90 s with constant acceleration until it reaches its cruising speed, 1.80 m/s.

(a) What is the average power of the elevator motor during this period?______________ hp

(b) How does this amount of power compare with its power during an upward trip with constant speed? (Give the power during an upward trip with constant speed.)____________________ hp