Analyzing Osmosis Experiment Results and Estimating Sugar Concentration in a Potato Cell

What is the initial step in calculating the change in length of a potato piece in pure water?

• Subtract the final length from the initial length

• Add the initial and final lengths

• Multiply the initial length by the final length

• Divide the final length by the initial length

How is the percentage change in mass calculated for the potato piece in 0.25 molar concentration?

• Divide the change in mass by the initial mass and multiply by 100%

• Divide the change in mass by the final mass and multiply by 100%

• Subtract the initial mass from the change in mass and multiply by 100%

• Multiply the change in mass by the initial mass and divide by 100%

Why is the data on length changes ignored when plotting the graph?

• The changes in length were identical for all concentrations

• The changes in length were too small to measure

• The changes in length were inconsistent due to shape changes

• The changes in length were not recorded

What is the independent variable in the graph plotting the osmosis experiment results?

• Initial mass

• Sugar concentration

• Percentage change in mass

• Change in length

Which scale is used for the vertical axis when plotting the percentage change in mass?

• One large square represents 0.5% change

• One large square represents 5% change

• One large square represents 10% change

• One large square represents 1% change

What does a 0% change in mass indicate about the sugar concentration inside and outside the potato cells?

• The concentration inside is lower than outside

• The concentration inside is higher than outside

• There is no sugar concentration inside the cells

• The concentrations are equal

What is the estimated sugar concentration in potato cells based on the graph?

• Between 0.75 and 0.80 moles

• Between 0.28 and 0.29 moles

• Between 0.10 and 0.15 moles

• Between 0.50 and 0.55 moles