Which of these materials has the most moles of metal atoms

a.100g potassium, k
b.100g potassium chloride, kcl
c.100g iron (ii) oxide, feo
d.100g iron, fe

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 ?