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violetmeadow4
03.04.2021 •
Biology
Below is a simple set of weights obtained while immersing potato slices in various sugаr solutions over 60 minutes.
Time OM sucrose 0.4M sucrose 0.6M sucrose (min) 0.8 M sucrose 1.0M sucrose
(min)
0 4.36 g 4.59 g 4.7g 4.5 g 5.0 g
30 4.5 g 4.3 g 4.4 g 4.1 g 4.6 g
60 4.68 4.28 4.0 g 3.7 g 4.08
For each solution, calculate the rate of weight change over this 60-minute period.
Using the osmosis data in the question above, determine the percent weight change for each sucrose solution.
0.0M sucrose = %
0.4M sucrose = %
0.6M sucrose = %
0.8M sucrose = %
1.0M sucrose = %
Solved
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Ответ:
Explanation:
The rate of weight change can be determined by using the formula:
weight change = weight at the final time - weight at the initial time.
Molarity Weight change
0.0M sucrose → (4.68 - 4.36) = 0.32 g/min
0.4 M sucrose → (4.28 - 4.59) = - 0.31 g/min
0.6 M sucrose → (4.0 - 4.7) = - 0.7 g/min
0.8 M sucrose → (3.7 - 4.5) = - 0.8 g/min
1.0 M sucrose → (4.08 - 5.0) = - 0.92 g/min
Percent weight change =![\dfrac{\text{final weight - Initial weight}}{Initial \ weight } \times100](/tpl/images/1238/0185/fbe7a.png)
Now;
Molarity Weight change
0.0M sucrose →
= 6.8 %
0.4 M sucrose →
= 8.4 %
0.6 M sucrose →
= 14.8 %
0.8 M sucrose →
= 17 %
1.0 M sucrose →
= 18.4%
Ответ:
Label A
nucleus
Label B
cytoplasm
Label C
ribosomes
Label D
DNA
Label E
cell membrane
Explanation: it's right on Edenuity