Just a basic simple question...
2 identical cups filled with equal amounts of coffee.
1 is super hot & d other super cold.
Now wich cuppa coffee wud weigh more?
I suppose d heated 1, rite?
Coz in comparison wit d cold 1, d heated 1 has absorbed energy stored inside it in d form of heat, rite???
In this particular case, I'd actually say the hot cup is lighter because evaporation would remove much more mass than the heat would add to it. If the cups were airtight, then yes, the hot cup would be heavier.
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