Heliox is a helium-oxygen mixture that may be used in scuba tanks for divers working at great depths. it is also used medically as a breathing treatment. a 7.25-l tank holds helium gas at a pressure of 1347 psi. a second 7.25-l tank holds oxygen at a pressure of 358.1 psi. the two gases are mixed in a 7.25-l tank. if the temperature remains the same throughout the process, what is the pressure of the gas mixture in the tank? assume ideal gas behavior.

Assume that two of the electrons at the negative terminal have attached themselves to a nearby neutral atom. there is now a negative ion with a charge -2e at this terminal. what are the electric potential and electric potential energy of the negative ion relative to the electron? the electric potential and the electric potential energy are both twice as much. the electric potential is twice as much and the electric potential energy is the same. the electric potential is the same and the electric potential energy is twice as much. the electric potential and the electric potential energy are both the same. the electric potential is the same and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron. the electric potential is twice as much and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron.