chemistry help!!!?

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the method of heating MgSO4 to find the percentage of water in the hydrated crystals is not suitable for all hydrates
why??

2006-12-05 13:51:10 · 1 answers · asked by kaymay09 4 in Education & Reference ➔ Homework Help

also, why is it necessary to let the evaporating dish cool before measuring mass?

the experiment was "hydrated crystals," if that helps

2006-12-05 13:57:19 · update #1

whare are some of the methods used to determine the percentage of water in a hydrate?

2006-12-05 14:36:30 · update #2

can someone please help me!!!!!!!

2006-12-05 14:58:05 · update #3

1 answers

Perhaps not all of the water molecules can be released by heating, as they are more tightly bonded?

See
http://en.wikipedia.org/wiki/Water_of_crystallization

2006-12-05 16:44:17 · answer #1 · answered by gp4rts 7 · 0⤊ 1⤋