A 9 year old male with no prior history of dental restorativ…

A 9 year old male with no prior history of dental restorative work presents with this solitary lesion that he claims has been present for at least three years. According to the patient and his parents the lesion has not increased in size or changed in color.  What is the most likely clinical diagnosis?

A cylinder contains 500-mL of Nitrogen gas at 1.96 atm and a…

A cylinder contains 500-mL of Nitrogen gas at 1.96 atm and a constant temperature. What volume will the nitrogen occupy if the pressure is increased to 2.75atm?   Type all the work Show equation used  Answer should be clear, have correct significant figures, and contain the correct unit.