[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?  

Exercise 1 A truck is subjected to a constant acceleration along a frictionless track.  A student measures its velocity (v) after specific durations (Δt).  The student uses a graph to analyze the truck’s motion. Duration, Δt, (s) Velocity, v, (m/s) 2.0 6.0 4.0 7.0 6.0 8.0 8.0 9.0 10.0 10.0 12.0 11.0 What is the acceleration of the truck represented by this graph?

What is the SI Metric unit for mass?

905 cm = ? m.