According to this link, "The wavelength at which the O2 molecule most strongly absorbs light is approximately 145 nm."

According to this link, that's in the ultraviolet range of the electromagnetic spectrum.

Consider two tanks containing oxygen gas, both equivalent. One tank has a steady stream of 145 nm ultraviolet light being emitted on it, while the other has a flame warming the bottom of the tank.

The temperature of the oxygen in both tanks will increase. Say we calibrate the experiment so both tanks reach 10 °C (and that nothing explodes 😅)

My question is, is there any difference in the oxygen contained in one tank vs. the other? In other words is there any experiment that could be done to determine whether some oxygen came from one tank or the other?

Or since they are at the same temperature are they equivalent?

The question arises because from what I understand, a gas molecule heats up by radiative absorption by absorbing a photon which excites the electrons in it, while the mechanism by which it's heated via conduction/convection is different (? molecules bumping into each other ?) and I'm not sure if this results in a different "quality" of heated gas.

According to this link, "The wavelength at which the $O_2$ molecule most strongly absorbs light is approximately $145$ nm."

According to this link, that's in the ultraviolet range of the electromagnetic spectrum.

Consider two tanks containing oxygen gas, both equivalent. One tank has a steady stream of $145$ nm ultraviolet light being emitted on it, while the other has a flame warming the bottom of the tank.

The temperature of the oxygen in both tanks will increase. Say we calibrate the experiment so both tanks reach $10^{\circ}$ C (and that nothing explodes)

My question is, is there any difference in the oxygen contained in one tank vs. the other? In other words, is there any experiment that could be done to determine whether some oxygen came from one tank or the other?

Or, since they are at the same temperature, are they equivalent?

The question arises because from what I understand, a gas molecule heats up by radiative absorption by absorbing a photon, which excites the electrons in it, while the mechanism by which it is heated via conduction/convection is different (molecules bumping into each other ?), and I'm not sure if this results in a different "quality" of heated gas.

According to this link, "The wavelength at which the O2 molecule most strongly absorbs light is approximately 145 nm."

According to this link, that's in the ultraviolet range of the electromagnetic spectrum.

Consider two tanks containing oxygen gas, both equivalent. One tank has a steady stream of 145 nm ultraviolet light being emitted on it, while the other has a flame warming the bottom of the tank.

The temperature of the oxygen in both tanks will increase. Say we calibrate the experiment so both tanks reach 10 °C.

My question is, is there any difference in the oxygen contained in one tank vs. the other? In other words is there any experiment that could be done to determine whether some oxygen came from one tank or the other?

Or since they are at the same temperature are they equivalent?

The question arises because from what I understand, a gas molecule heats up by radiative absorption by absorbing a photon which excites the electrons in it, while the mechanism by which it's heated via conduction/convection is different (? molecules bumping into each other ?) and I'm not sure if this results in a different "quality" of heated gas.

According to this link, "The wavelength at which the O2 molecule most strongly absorbs light is approximately 145 nm."

According to this link, that's in the ultraviolet range of the electromagnetic spectrum.

Consider two tanks containing oxygen gas, both equivalent. One tank has a steady stream of 145 nm ultraviolet light being emitted on it, while the other has a flame warming the bottom of the tank.

The temperature of the oxygen in both tanks will increase. Say we calibrate the experiment so both tanks reach 10 °C (and that nothing explodes 😅)

My question is, is there any difference in the oxygen contained in one tank vs. the other? In other words is there any experiment that could be done to determine whether some oxygen came from one tank or the other?

Or since they are at the same temperature are they equivalent?

The question arises because from what I understand, a gas molecule heats up by radiative absorption by absorbing a photon which excites the electrons in it, while the mechanism by which it's heated via conduction/convection is different (? molecules bumping into each other ?) and I'm not sure if this results in a different "quality" of heated gas.