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Topic: Science
Number of pages / Number of words: 3 / 749
Essay's paper body

Was the change in #4 an endothermic or exothermic reaction?

  • The change in #4 was an exothermic (releases heat) reaction.

Two Major Sources of Error

  • One source or error in this experiment can be caused by some water vapor from the air being absorbed back into the crystal as soon as the burner is turned off...

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The mass would be higher because of the added H2O. Therefore, when the crucible is weighed it would give a different mass.

Explanation

The whole experiment was conducted to determine the amount of water molecules in a bluestone crystal. To get the heat out of a hydrated compound it needs to be heated at a high temperature...


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