Percentage Change in Mass
Calculating percentage change is a fundamental math skill in Biology, especially for the osmosis practical.
A potato goes from 2.0g to 2.2g. What is the % change?
What is Percentage Change in Mass?
"Percentage change in mass is a calculation used to quantify how much the weight of a specimen has changed relative to its starting weight."
Osmosis is the diffusion of water through a:
If a potato cylinder gains mass after being left in a solution, what is the best explanation?
In osmosis, water moves from:
Calculations
Use the formula: (Change in Value / Original Value) x 100.
If the final mass is lower, the result is negative (a percentage loss).
Plotting these on a graph allows you to find the "isotonic" point (no mass change).
The isotonic point on a graph is where the line crosses the x-axis (0% change).
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