Weight of opened cold coke

  • #1

Main Question or Discussion Point

A bottle of coke was taken out of refrigerator. It was then kept in a sensitive weighing balance.Its cap was opened. The initial weight was found to be 2.403 kg. After a while its weight increased to 2.423 kg. Then again it started decreasing.
I repeated this experiment for many times. And the result was the same the weight first increased and then started decreasing.
But I think that the weight must plainly start to decrease because the coke molecules will evaporate.
Please explain this fairly contradictory result to me.
 

Answers and Replies

  • #2
285
26
It sounds like the cold Bottle attracted condensation, as the bottle warmed the condensate evaporated.
 
  • #3
xts
881
0
Interesting... I may believe it is a water condensating on the bottle.

To check this hypothesis - try the same experiment, but do not open the bottle.

And as soon as it reaches maximum weight - wipe it with a towel and put back on the balance.

EDIT>>>
I hardly may believe that different bottles of Coke have their weight identical up to 1g accuracy.
 
Last edited:

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