Thursday, January 13, 2011

Sorry for the late post!
Totally forgot about the lab blog.
The lab we did was Lab 4c - Determining the EmPirical formula of a compound.

In this lab, the materials we had were a pipestem triangle, iron ring, a stand, and a Bunsen burner, and a crucible.
But always remember before you start a lab to put on your lab coat and safety goggles!!

After we heated up the empty crucible for 3 minutes, we weighed it and determined the mass of the crucible + lid.
We then Placed the hydrate into the crucible until it was 1/3 full.


After, we heated the crucible until the bottom of it turned red.
Allow the crucible to cool for 5 minutes, then record the mass of the crucible + lid + contents.

Reheat the crucible so all the water is gone, and check the mass. It should be close or equal to the first mass.

Add a few drops of water to see if there is a change.



Here are some more cool pictures of our experiment!!

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