The student then set up the apparatus correctly. Figure 2 shows the student’s results. Determine the mean rate of reaction between 0 seconds and 60 seconds- 6169

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1. From the graph, the volume of gas at 60 seconds = 45 cm³
   (Allowing for small error if curve was slightly off)

   To find the rate of reaction, I use the formula:

   Rate = volume ÷ time

   So:
   Rate = 45 ÷ 60 = 0.75 cm³/s

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