Thursday, March 20, 2014

Chemistry Reflection 7

Today in Chemistry, we did an experiment on empirical formula which is to find how many water in hydrated copper sulfate (H20 in CuSO4).
So first we need to weigh the crucible (24.54 grams) and then we need to fill it with 2 grams of copper sulfate. Then we need to burn it. After heating it we need to let it cool down. We need to weigh it again and subtract it with the weight of the crucible. (24.54 – 23.35 grams) That will be the mass of the copper sulfate (1.19 grams).

Then we subtract it with 2 so it is (2-1.19) so the mass of water is 0.81 grams. Then you will need to find the empirical formula which will be 1:5 

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