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Medication order: cefotetan 2 g Q12 hours over 30 min. Available stock: cetofetan 2 g in 50 mL

Calculate the amount of concentrate and diluent for each of the following compounds. Prepare 8 mL of a 5 mg/mL hydrocortisone solution from a 100 mg/2 mL stock solution. How many milliliters of hydrocortisone and diluent are needed

If the atmospheric pressure lowers, what affect does it have on the boiling point of a liquid?

Cladogram to use http://i.imgur.com/6rfwqgb.jpg

And how is it useful?

Cladogram to follow,

http://i.imgur.com/6rfwqgb.jpg

I have an idea on what the answer is but I'm looking for confirmation.

a. Rapid rotation and a strong stellar wind

b. Nuclear fusion in the core varies according to the amount of gravitational contraction that occurs.

c. The rate of nuclear energy generated in the core equals the rate of energy radiated from the surface.

d. all of the above

e. none of the above

Marks: 3

Most stars probably formed:

Answer:

a. Alone.

b. In clusters.

c. From constellations.

d. In the nucleus of the Galaxy.

a. Tracking one star through time.

b. Plotting stars on the Hertzsprung-Russell diagram.

c. Studying different objects at different stages of evolution and piecing together an evolutionary picture.

d. Emission nebulae, exclusively.

At what stage of evolution do T Tauri stars occur?

Answer:

a. Just as the collapsing cloud becomes luminous.

b. Just prior to the protostar stage.

c. When a protostar is on the verge of becoming a main sequence star.

d. After the star has established itself as a main sequence star

a. redshift

b. blueshift

c. some have a redshift, while others have a blueshift.

a. 20 A.U.

b. 15 pc

c. 150 km

d. 3 pc

e. 150,000 A.U

Not only does the central engine of active galaxies and quasars require a black hole, _______ is also needed to provide the energy radiated.

Answer:

a. a very strong magnetic field

b. a source of very high energy electrons

c. a high rate of rotation of the black hole

d. an accretion disk of matter

e. a companion black hole

a. normal

b. active

c. neither, about half are normal and hald are active

A galaxy is observed to have a red shift which indicates a recession speed of 150 km/s. Use 75 km/s/Mpc for Hubble's constant and determine the distance to the galaxy in Mpc.

Answer:

a. 150

b. 11,250

c. 2 d. 0.5

d. none of these

Galaxy evolution models suggest that galaxies evolve as follows

a. normal elliptical -> quasar -> radio galaxy

b. normal elliptical -> radio galaxy -> quasar

c. quasar -> normal elliptical -> radio galaxy

d. quasar -> radio galaxy -> normal elliptical

Galaxy seeds around which galaxies, clusters and walls grew may have been...

a. caused by hot dark matter. b. caused by baryons.

c. the result of the separation of the electromagnetic and weak forces.

d. the result of freezing water molecules shortly after the universe became transparent to photons.

e. caused by defects in space-time.