T/F questions

1. Thalassemia results in low oxygen levels because RBCs are prematurely destroyed and the person produces less hemoglobin than normal.

2. Cancer could come back after a stem cell transplant because cancerous blood cells might have been in the tissues and not killed before the transplant.

3. Blood transfusion reactions always result in kidney failure.

A total volume of 33.15-mL of 0.1053-M NaOH is needed to titrate 24.5-mL of benzoic acid. (Benzoic acid is a monoprotic acid with a pKa = 4.20). Determine the pH when the following volumes of the 0.1053 M NaOH have been added

a) 30.00 mL (before the equivalence point)?

b) 33.15 mL (at the equivalence point)

c) 36.00 mL (after the equivalence point)

Pneumothorax is normally treated by insertion of a chest tube to draw air out of the pleural cavity. Explain why this would allow the collapsed lung to reinflate. Support your answer by drawing a diagram of the lungs, pleurae, and pleural cavity before and after inserting a chest tube. Label your diagram with the appropriate alveolar pressure and intrapleural pressure, assuming an atmospheric pressure of 760 mm Hg.

1. Determine CACI international mode of entry into foreign markets. This should be based upon a serious analysis of your company’s risk-return tradeoff. In your opinion, has your company taken the right approach?
2. Does CACI international have an exit strategy? Recall that exit strategies are to be determined before entry into the foreign market, rather than after entry.

A 2100 kg truck is driving south through an intersection at 40 mph when it crashes into a 1200 kg car that was driving east through the intersection at 55 mph. The two vehicle stick together in a sad, scary, twisted mess. What is the velocity (both magnitude and direction) of the wreckage immediately after the collision, before the vehicles have had any time to slow due to friction?

Assume that the age at onset of a certain disease is distributed normally with a mean of 43 years and a variance of 177.69 years.

a) What is the probability that an individual afflicted with the disease developed it before age 31?
probability =  

b) What is the probability that an individual afflicted with the disease developed it after age 48?
probability =  

c) What is the probability that an individual afflicted with the disease developed it between ages 31 and 48?
probability =  

A bullet is shot horizontally and becomes embedded in a large block, which is initially at rest on a horizontal surface. How far will the block slide before stopping? The mass of the bullet is 12.6 g, the mass of the block is 9.8 kg, the bullet's impact speed is 710 m/s, and the coefficient of kinetic friction between the block and the surface is 0.220. (Assume that the block does not spin after being hit with the bullet.)

An Escort and a Camaro traveling at right angles collide and stick together. The Escort has a mass of 1200 kg and a speed of 20 km/h in the positive x direction before the collision. The Camaro has a mass of 1500 kg and was traveling in the positive y direction. After the collision, the two move off at an angle of 57 ^o to the x axis. What was the speed of the Camaro?(in km/h)

#3A. Under the chancellorship of Bismarck, Germany:

a. continued its traditional disunity

b. made strides toward unity but ultimately failed to come together

c. ceded its power and land to other European powers

d. united together for the first time

#3B. Short answer: Do you think central Europe was better off before Bismarck or after Bismarck? Explain.