imagine 2 friends were standing HERE at a air-conditioned room. they felt freezing cold. after sometime, they decided to leave the room and got to THERE which was nearer to the entrance cum exit of the automatic door.
science student: why is it that i felt warmer when i was THERE than HERE?
art student: because more people were breathing at THERE to contribute to the higher temperature.
science student: HUH? i thought it is beacuse the automatic door allows the exchange of air so the warm air outside the room can flow in and the cool air inside the room can flow out.
there was a awkward silence.
they continued their journey and the science student decided to challenge the art student again.
science student: what do people breathe out?
art student: hmm...
NITROGEN GAS!
science student immediately dropped flat onto the ground and started laughing. art student was puzzled at the science student's reaction.
art student: did i make a mistake?
science student: well, actually, YES! people breathe out carbon dioxide gas, not nitrogen gas.
the art student had a slight enlightment.
on the bus, the art student felt discriminated by the science student.
art student: what's the relative molecular mass of nitrogen gas?
science student: 28. cos the atomic mass of a nitrogen element is 14.
art student: i don't believe you. i think it's 14.
science student: whatever. i have the periodic table with me.
to the science student's disgust, the art student was right.
art student: haha... where has all your chemistry knowledge been to? i have not been studing chemistry for the past 2 year.
and the art student gave an evil grin.
THE END
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