Acrystallographer measures the horizontal spacing between molecules in a crystal. the spacing is
13.9
nm
. what is the total width of a crystal in millimeters
105
molecules across? write your answer as a decimal.

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?

From the choices provided below, list the reagent(s) in order that will react with cyclopentanone to form the compound shown below.

How many peaks will be present in a mass spectrum for brcl?