May/June 2026 Paper 22

2026 · 40 questions · 40 parts · 40 marks

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5Maths Skills BiologyMedium1 mark
Potato cylinders were placed in sugar solutions of different concentrations. The lengths of the cylinders were measured before and after they were placed in the sugar solutions. The ratio of final length to initial length was calculated. The initial length of the potato cylinders was 4 cm. The graph shows the results of the investigation.
Graph of ratio of final length to initial length (0.8 to 1.2) against concentration of sugar solution / moles per dm³ (0.1 to 0.5), falling from 1.20 at 0.1 to 1.05 at 0.2, 1.00 at 0.3, 0.95 at 0.4 and about 0.93 at 0.5
What was the final length of the potato cylinder that was placed in 0.1 moles per dm sugar solution?