Today we looked at the conservation of mass.
We put a bit if steel wool in a test tube and filled it about 1/8 of the way full, and I also added about 10ml of a solution of impure potassium chlorate.
Next I filled a balloon with air and placed it over the test tube.
Why? the reason for this is to find out if the steel wool will loose or gain mass after it oxydises.
After a few weeks sitting in the test tube I looked at it and saw that it was rusty.
before I started this experiment it weighed 23 grams, now it weighed 24 grams. so this proves that this theory is correct in that iron will gain mass when combined with oxygen.
the molar mass if iron is 58.84g\mol
the molar mass of oxygen is 16.00g\mol
So the molar mass of iron oxide is 159.68
I'll wait until you finish.
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