A sample of 4.63 mol of xenon is confined at low pressure in a volume at a temperature of 51 °C. Describe quantitatively the effects of each of the following changes on the pressure, the average kinetic energy per molecule in the gas, and the root-mean-square speed.

(a) The temperature is decreased to -66 °C.
(b) The volume is halved.
(c) The amount of xenon is increased to 6.02 mol.

Give each answer as a decimal factor of the form: new value = factor old value.   A factor of 1 means no change.

A solution of Na2CO3 is added dropwise to a solution that contains 1.14×10−2mol L−1 Fe^2+ and 1.54×10−2mol L−1 Cd2+. What concentration of  CO3^2− is need to initiate precipitation? Neglect any volume changes during the addition.

The solubility-product constant, Ksp, at 25 ∘C for two compounds [iron(II) carbonate, FeCO3, and cadmium(II) carbonate, CdCO3] are given by the table

A bicycle rider is interested in the effects of temperature on air density. A change in temperature will also affect the tire pressure.

a) Write a computer program that calculates air density at atmospheric pressure for temperatures from -10?C to 50?C.

b) Assume that a bicycle tire is inflated to an absolute pressure of 450 kPa at 20?C. Assume also that the volume of the tire does not change with temperature. Write a program to show how the tire pressure changes with the temperature in the same range, -10?C to 50?C.

Prepare a table or graph or both.

What does readiness to change mean, and what does it look like? When I worked in a large consulting firm, we had a specific step in our change process that was entitled "change readiness". But this step was akin to the "communicate" and "act" stages in the EP model. In reality, an organization that is "change ready" has incorporated the change mindset, skills and tools into its culture so that changes become part of how the company moves forward. In this type of scenario, resistance may be less entrenched.

Your thoughts?

2. Unemployment

a. During a recession, labor demand falls and job search will likely produce fewer offers with a given amount of search, as well as lower quality offers. How should this affect the workers reservation wage?

b. How (and why) would an increase in the generosity of unemployment insurance benefits affect workers reservation wages and expected unemployment durations?

c. If a firm pays its workers efficiency wages how will the premium it has to pay its workers to motivate them change as the unemployment rate changes?

A bicycle rider is interested in the effects of temperature on air density. A change in temperature will also affect the tire pressure.

a) Write a computer program that calculates air density at atmospheric pressure for temperatures from -10?C to 50?C.

b) Assume that a bicycle tire is inflated to an absolute pressure of 450 kPa at 20?C. Assume also that the volume of the tire does not change with temperature. Write a program to show how the tire pressure changes with the temperature in the same range, -10?C to 50?C.

Prepare a table or graph or both.

Refrigerant 134a at p₁ = 30 lb_f/in², T₁ = 40^oF enters a compressor operating at steady state with a mass flow rate of 400 lb/h and exits as saturated vapor at p₂ = 160 lb_f/in². Heat transfer occurs from the compressor to its surroundings, which are at T₀ = 40^oF. Changes in kinetic and potential energy can be ignored. The power input to the compressor is 4 hp.  

Determine the heat transfer rate for the compressor, in Btu/hr, and the entropy production rate for the compressor, in Btu/hr·^oR.

Answer the following

a)State any advantages or disadvantages you see in measuring vibrations with a strain gauge as opposed to the other methods we have used. What effect would changes in temperature have on strain gauge readings and is it possible to eliminate this effect? It was briefly mentioned that different bridge configurations can eliminate temperature effects, but what are those effects and how does that work?

b)In order to get the most accurate readings, should a strain gauge have a high stiffness or a low stiffness? Explain.

Potential GDP is 24.3 mln and actual GDP is 24.1 mln. Price level is 98. 1. What phase of business cycle takes place in the short run (Expansion or Recession)? 2. Draw the graph for this short run economic situation and 3. Describe the problems (changes in macroeconomic variables: GDP, Unemployment and Price level) 4. Explain the appropriate monetary policy to bring the economy back to its long run Macroeconomic equilibrium. What tools would CB will use? 5. How will macroeconomic variables change?