Size of a molecule - #4.4 THE SIZE OF A MOLECULE Lab#4...

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#4.4 THE SIZE OF A MOLECULE Lab #4 Jennie Chang (even) Allison Yee (odd-partner) Makenzy Doniak (even-partner)
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CALCULATIONS 1. Estimate the area of the oleic acid film by pretending that the film is circular and then measuring the average radius in cm. Calculate the area from the formula, area= π r 2 Equation: A= π r 2 Sample from data: π x 10.75 2 A=363.05 cm 2. Calculate the volume of a single drop of oleic acid solution. Use the drop per cm 3 in the data and divide. Equation: 1/number of drops per cm 3 Sample from data: 1/21 Volume= .05cm 3 3. Calculate the volume of pure oleic acid in one drop of solution. Sample from data: 1/200 x .05 = .00024 Volume of pure oleic acid= .00024cm 3 4. Use the area and volume of the oleic acid film to calculate the approximate Equation: Volume= thickness x area. Sample from data: .05cm 3 = X x 363.05cm Thickness= 1.3 x 10 -4 cm 5. Calculate the thickness in nm. 1cm= 1 x 10 7 .00013x 10 7 = 1300cm TABLE OF RESULTS Radius trial 1 10.75cm Radius trial 2
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Size of a molecule - #4.4 THE SIZE OF A MOLECULE Lab#4...

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