2006-12-03 05:08:36 · 4 answers · asked by beckycandy1515 1 in Science & Mathematics ➔ Chemistry
Honestly, its mostly just because you will damage the scales/balance if you put a hot object on them.
2006-12-03 05:13:11 · answer #1 · answered by Anonymous · 0⤊ 0⤋
An analytical balance is a very sensitive object. For example, there were analytical balances which reflected fluctuations in the 5th place past the decimal when there were earthquakes many miles away.
The analytical balance you are using the weigh the crucible would be sensitive to local air currents created by the hot crucible in the local environment. Typically, this wouldn't matter, but if you are weighing to the nearest 0.1 mg, it could cause the balance to fluctuate and give you an erroneous result.
(Also, they are expensive and you wouldn't want to ruin it by putting any "hot" objects in/on them.)
2006-12-03 05:16:38 · answer #2 · answered by sep_n 3 · 1⤊ 0⤋
'artemis_f...' is mostly correct. A hot crucible can damage the balance and the difference in temperature (cool balance pan-hot crucible) can cause the crucible to crack (most likely scenario).
Get an "A".
2006-12-03 09:12:02 · answer #3 · answered by teachr 5 · 0⤊ 0⤋
The hot crucible heats the surrounding air which expands and rises(less dense) causing a slight updraft which will affect the measurement.
2006-12-03 05:14:13 · answer #4 · answered by rm 3 · 1⤊ 0⤋