Determine which compound is optically active (chiral). [1] 1-bromo-1-chloropropane[2] 2-chloropropane[3] alanine (an amino acid) [4]   

Which of the following can exhibit cis-trans isomerism?  yes = can have cis-trans isomers    no = cannot have cis-trans isomers [1] 1,2-dimethylcyclopentane[2]1-butene[3]2-butene[4] 3-ethyl-3-hexene[5] 2-methylbutane

What type of reaction is this?  2-pentanol 

[1] Which of the following alkane name is correct?  3,3-dipropylpentane, 2,3-dibutylpropane, 3-ethyl-4-methylbutane, 4-ethyl-5-butylheptane     [2] What is the correct IUPAC name for (CH3)2CH(CH2)3CH3? [3] What is the classification of this carbon (the one the arrow is pointing to)?   

Three 5.0 kg spheres are held at distances d1=d2= 0.54 m apart, as shown in the figure. What is the potential energy (in nJ) of the system? Note: 1nJ = 10-9 J.

Identify this structure that courses through the posterior and superior mediastinum and drains into the junction between the left internal jugular vein and left subclavian vein.

The tiniest and toughest pathogens are:

High-density lipoproteins:

The height in feet of a small rocket seconds after it it launched is given by the function

A patient arrives in the emergency room concerned about a painless ulcer with a black center that has formed on his hand. He tells the healthcare team that the ulcer was precluded by small blisters that itched. The team decides to collect samples from the ulcer in order to determine the cause of the infection. A variety of staining procedures and other biochemical tests are performed. The endospore stain is shown below. Based on the results of the stain, which of the following organisms is likely responsible for the patient’s cutaneous infection?