What makes Ocean currents , Deep currents, and surface currents alike ??

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

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

An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it