Posted by wifaj on Tuesday, January 13, 2009 at 8:23pm.
Have you considered helping a little by telling us what you heated and the details of the experiment?
a. All things being equal, losing part of the material due to spattering would make the second weighing lower than it should be. That makes the measured mass of water too high.
b. Since I don't know what experiment you are doing, I will leave this for you and you can use the answer from part a to determine part b.
than you Drbob222 ,, what i heated was the hydrate , but ur answer still makes since ,, thank you very much
thank you Drbob222 ,, what i heated was the hydrate , so all i had to do was heat about 3 grams of hydrate till all of the water is evaporated < its turns into a pale color> so when the water is gone it becomes anhydrous copper 2 sulfate , so i really hope that helps you understand what i meant by my questions ,, and thank you again .
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