Sucrose is allowed to diffuse along a 10-cm length of tubing filled with water. The tube is 6.0 cm2 in crosssectional area. The diffusion coefficient is equal to 5.0 × 10–10 m2/s, and 8.0 × 10−14 kg is transported along the tube in 15 s. What is the difference in the concentration levels of sucrose at the two ends of the tube?

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