Decide which of the following statements are true and which are false.

1. Real gas molecules behave most ideally at high temperature and low pressure.

2. At constant temperature, the heavier the gas molecules, the larger the average velocity.

3. Ideal gas molecules have small volumes and exert weak attractive forces on one another.

4. In order for two separate 1.0 L samples of O2(g) and H2(g) to have the same average velocity, the O2(g) sample must be at a lower temperature than the H2(g) sample.

5. As temperature increases, the average kinetic energy of a sample of gas molecules decreases.

6. At constant temperature, the heavier the gas molecules, the smaller the average kinetic energy.

A savvy business owner wanted to assess whether the type of fragrance influenced the amount of money spent. He tried peppermint, lavender, male cologne, and a floral perfume in his four stores. Amount of money spent (in hundreds) is reported for each type of fragrance. Conduct a one-way repeated measures ANOVA to determine whether fragrance influences total amount of money spent.

Calculate the contribution to total performance from currency, country, and stock selection for the manager in the following table. All exchange rates are expressed as units of foreign currency that can be purchased with one U.S. dollar. (Input all values as positive values. Do not round intermediate calculations. Round your answers to 2 decimal places.)

a) Calculate the cell potential at 25°C for the cell

Fe(s) I (Fe²⁺ (0.100 M) II Pd²⁺ (1.0 × 10^-5 M) I Pd(s)

given that the standard reduction potential for Fe²⁺/Fe is -0.45 V and for Pd²⁺/Pd is +0.95 V. - Please show the steps

2.0 mL of 0.5M HCl was added to 50 mL of 0.5M Formate-formic acid buffer at pH 3.6. (pKa= 3.75) What is the resulting pH after the addition of HCl?

2.0 mL of 0.5M HCl was added to 50 mL of 0.0625M Formate-formic acid buffer at pH 3.6. (pKa= 3.75) What is the resulting pH after the addition of HCl?

1.0 mL of 0.6M NaOH was added to 10 mL of 0.5M Acetate-acetic acid buffer at pH 4.2. What is the resulting pH after the addition of NaOH?

0.5 mL of 0.3M NaOH was added to 10 mL of 0.5M Acetate-acetic acid buffer at pH 4.2. What is the resulting pH after the addition of NaOH?

3. a) A trapezoidal open channel is being designed to convey a discharge of 11.0 m3/sec. The channel will be excavated into clay and will have the following properties: side slope of m = 1.5, the bottom slope of So = 0.001, Manning’s n = 0.022, and bottom width b = 1.0 m. For these conditions is there a risk of channel erosion?

b) The earth-works contractor that will carry out the excavation suggests that the side slope angle can be increased to 45o (i.e. m = 1). Comment on the impact that such a change would have on 1) the required depth of excavation, and 2) the risk of erosion.

c) Calculation of the normal depth using Manning’s equation does not consider freeboard.

I need help with this question. Please help me, Thank you!

2. A wall footing is to support a 400 mm wide reinforced concrete wall with a dead load of 270 KN/m and a live load of 210 KN/m. The bottom of the footing is 1.50 m below the final grade. Assume the soil weighs 15.78 KN/m3 and the allowable soil pressure is 190 Kpa. Use 75 mm as concrete cover, fc’ is 28 Mpa, fy is 415 Mpa, and concrete weights 23.5 KN/m3. Compute the:

1. Width and depth of footing
2. Spacing of 20 mm diameter main bars and 12 mm diameter longitudinal temperature and shrinkage steel
3. The development length required if bar location, coating, and size factors are all 1.0. Use normal weight concrete

Write a C++ program in a file called pop.cpp that opens a file called pop.dat which has the following data (you’ll have to create pop.dat)

AX013 1.0

BX123456 1234.56

ABNB9876152345 99999.99

The data are account numbers and balances. Account numbers are, at most 14 characters. Balances are, at most, 8 characters (no more than 99999.99). Using a loop until the end of file, read an account number and balance then write these to standard output in the following format shown below. Use the I/O manipulators setw, left, and right. Set the precision/fixed/showpoint so that all numeric data is written are written with exactly two digits to the right of the decimal.

Account Number    Balance

-------------------------

AX013          $     1.00

BX123456       $ 1234.56

ABNB9876152345 $ 99999.99

The Arbors at Los Brisos and Ranch Pointe are being considered for investment. Our initial investment in the two properties are:

   The Arbors at Los Brisos $2,000,000
   Ranch Pointe $2,750,000

The cost of capital for our firm is 12%

We need to rank the projects according to the profitability index.

The Arbors at Los Brisos Ranch Pointe
   Initial Investment    -$2,000,000 -$2,750,000
Year 1    $450,000 $300,000
Year 2    $600,000 $500,000
Year 3    $750,000 $750,000
Year 4    $700,000 $875,000
Year 5    $700,000 $950,000

Which of the two should be ranked higher based upon profitability index?

A parallel-plate capacitor with circular plates of radius a separated by a distance d is being charged though a resistor R and battery with emf E.

1 (a) (5pts.) Make a diagram showing the direction of the induced magnetic field between the plates.

(b) (15pts) Show that the magnitude of this induced magnetic field r < a is given by B(r) = µ0 r 2π a2 E R e −t/RC, where r is the distance to the axis of symmetry of the plates.

(c) (4pts.) Why is the magnetic field independent on the distance to either of the plates?

(d) (6pts.) What is the maximum magnetic field between the plates if they have a radius of a = 1.0 cm, and the capacitor is being charged by a 120.0 V battery through a 5.0 Ω resistor?