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Criterion E: Processing Data
Stoichiometry: Actual and Theoretical Yield

Data and observations:
During the process of carrying out this test, we were told to heat up 1 gram of dibasic cupric carbonate, so that we are able to determine the weight of copper oxide obtained when the compound is decomposed my heating- as per the sheet we received. While operating this, I captured that at first, the color of the substance was a bright aqua blue, as oppose to after heating, when I witnessed it gradually change color to a charcoal solid black powder. Also, after measuring the powder before and after, it is discovered that the mass of the powder decreases. The data that we gathered shows that we started off with 1 gram (as authorized to do in the procedure) of the aqua blue substance when measured fairly accurate, and we ended up with .81grams of black powder.

Data Analysis:
When calculating the actual yield of copper oxide from the data recorded we found that the most accurate results would be .72 grams, different measurements from what we were able to attain, which was .81 grams. This could perhaps have occurred because of miscalculation and inaccuracy in measurement. For example, a small amount of powder may have been displaced while stirring the powder when it was placed above the bunsen burner. Some of the powder may have also remained on the stirring rod. Another possibility for this decrease could be that, as the substance was heated, it was also compressed. The reason behind why this change may have only been an error is because of the very slight decrease of the substance after the experiment was carried out. If this test was carried out more than one time, it would result in the data being more reliable and more accurate than it turned up being. The percent error amongst the difference actual yield and theoretical yield ended up being 12.5%. In other…...

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