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Rate of Reaction is directly proportional to Concentration

Background:
Radioactive elements have a half-life thus making the handling and storage of the radioactive element difficult. The half life of any given element is the time that is required for one half of the sample to decay. For example if you have 10 grams of a radioactive element after one half like you would be left with 5 grams after another half life you would be left with 2.5 and so on. When dealing with nuclear waste the half lives are a very important factor. In general there is an inverse relationship between the half-life and the intensity of radioactivity of an element. Elements with long half lives decay very slowly while elements with short half lives decay much quicker. In nuclear waste, elements with very short half lives are not a major concern because they decay to negligible amounts. Radioactive elements with long half lives are less intense and thus decay slower then radioactive elements with short half lives. When dealing with long half live radioactive elements it requires special handling and storage for several or more years depending how long it takes to decay.
Procedure/ Observation:
1. After getting the following supplies (graduated cylinder, beakers, chemicals and stop watch) we filled a 100 ml beaker with 5ml of Sodium Hydrogen Sulfite. Afterwards we added 5ml of Iodate and 5ml of water, and then stirred the chemicals.
Observation:
It took 122.484 seconds for the solution to turn a dark blue color.
2. Repeat
Observation:
It took 89.577 seconds for the solution to change color.
3. Filled a 100 ml beaker with 5 ml of Sodium Hydrogen Sulfite, then added 4ml of Iodate and 6 ml of water and stirred all together.
Observation:
It took 73.500 seconds for solution to change color.
4. Repeat
Observation:
It took 112.829 seconds for the solution to change color.
5....