2. When 66.4 g of calcium reacts with hydrofluoric acid at 23.2 0 C and a pressure of 741 mm of Hg, how many liters of hydrogen gas will be produced

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 ?