... the thermometer until the right temperature has been reached 5) Keep the temperature steady for 2 minutes by removing the heat (if it drops dramatically, heat again) to allow the test tubes to remain at a constant heat 6) Take out the warmed conical flask, pour the yeast solution from the test tube into the warmed conical flask, then add the H O and quickly place the bung into the neck of the conical flask and start the stopwatch 7) After 30 seconds, record the amount of oxygen given off shown by the gas syringe. 8) Repeat from step 3, using the same method but changing the temperature. I am investigating the differences in the results for 5 temperatures, 20 C, 30 C, 40 C, 50 C and 60 C. I will repeat the experiment twice for each temperature to try and eliminate errors and inaccuracies; I will then calculate a mean value and use ...

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