Why do you keep switching screen names? Same question as above. You didn't like the answer you got for the origin of the soot?
Accumulation of soot makes the crucible weigh more. right? So how will that affect the mass in the crucible. Fit that into your equations for whatever experiment you are doing.
If your heating generates soot on the bottom of the crucible, what is the origin of the soot? How will this soot collection affect x?
x is the mols of waters of hydration
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