Composition of a Copper Sulfate Hydrate Lab

During the Composition of a Copper Sulfate Hydrate Lab, we heated some copper sulfate on a hot plate until all of the water had evaporated and all that was left was only the copper and the sulfate.

Here is a picture before we heated the copper sulfate:

Here is a picture after we heated the copper sulfate:

Here is a picture of our calculations:

We had a pretty high percent error and a couple reasons for that could be that we had too much of the substance in our sample [we had almost the max amount], and the weight of our substance hydrated/anhydrated could be a little off, making the percent error higher than it should be.


Here is a picture of our calculations to figure out the empirical formula of the hydrate: