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Catalase is an enzyme found in many plant and animal cells. It catalyses the breakdown of hydrogen peroxide into water and oxygen. catalase hydrogen peroxide water + oxygen a In an investigation into the action of catalase in potato, 20 g of potato tissue was put into a small beaker containing hydrogen peroxide weighing 80 g in total. The temperature was maintained at 20 °C throughout the investigation. As soon as the potato was added, the mass of the beaker and its contents was recorded until there was no further change in mass. The results are shown in the graph. mass of apparatus/g 100- 99- 98- 97 96- 95+ 0 2 3 1 4 time after potato tissue added/min 5

i How much oxygen was formed in this investigation? Explain your answer.​


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