Which of the following element combinations will likely form polyatomic ions? cesium and chlorine oxygen and carbon sodium and bromine xenon and neon

Asolution of sodium hydroxide was titrated against a solution of sulfuric acid. how many moles of sodium hydroxide would react with 1 mole of sulfuric acid?

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

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 ?