How many fused rings make up the steroid backbone?

In the mass spectrum of pentane, which of the following corresponds to the base peak? 

The identify of a compound is determined by which piece of data obtained by gas chromatography analysis?

Which of the following is true regarding gas solubility and temperature?

Which of the following are TRUE for chemical ionization?

Upon auscultating the chest you notice absent lung sounds on the right side of the chest.  Which of the following conditions to suspect the patient is having.   Patient has a heart of 110, Skin is pink, warm and dry, a strong radial pulse is present, no jugular venous distention is present. 

Which of the following do/does NOT involve the interaction of molecules with electromagnetic radiation?

The health care provider orders Lactated Ringer’s solution.  The nurse understands the client with which condition should not receive this solution.  

During your secondary assessment of a 19-year-old female with multiple traumas, you note bilateral humeral deformities and a deformity to the left midshaft femur. Her skin is diaphoretic, and her pulse is rapid and weak. Your partner has appropriately managed her airway and is maintaining manual stabilization of her head. The most appropriate treatment for this patient includes:

You run a silica gel TLC plate with ethyl acetate as your mobile phase. Your goal is to separate caffeine and aspirin, but the TLC plate was exposed to water in the humid Florida air. Which of the following is true?