A runner experiences sharp pain in the front of the knee aft…

A runner experiences sharp pain in the front of the knee after running long distances. The pain is aggravated by activities such as going up or down stairs. There is no swelling or bruising, but the pain increases after physical activity. Which condition is most likely present?

13. (3 points) Draw a 3D Lewis structure (use wedge and dash…

13. (3 points) Draw a 3D Lewis structure (use wedge and dash bonds) for CH2S.  Be sure to include any formal charges or lone pairs.  WCSP a. (2 points) Determine the electron domain geometry about the carbon. __________________________ b. (2 points) Is CH2S polar? Explain in just a few words.     Enter the number of lone pair electrons in the box below.