Monday
September 1, 2014

Homework Help: Pre-AP Chemistry

Posted by Anonymous on Thursday, October 7, 2010 at 3:09pm.

Volume (cm3 Area(cm2) Thickness (cm)
.20 cm3 100 cm2 0.002 cm
.28 cm3 122 cm2 0.002 cm
.24 cm3 144 cm2 0.017 cm
.41 cm3 225 cm2 0.0018cm

If you had used a very crude balance that allowed only one significant figure, how would this have affected your results for: Area? Volume? Thickness?
Could this method be used to determine the thickness of an oil spill? What information would be needed?


slope --y = 49.4x - 30
What does the slope tell about the thickness



By mistake, a quart of oil (1.06 quarts = 1 liter = 1000 cm3) was dumped into a
swimming pool that measures 25.0 m by 30.0 m. The density of the oil was 0.750 g/cm3. How thick was the resulting oil slick? Be careful with significant figures and exponential notation. Density is not needed to calculate the answer for this problem.
How might this method of finding thickness be used in finding the size of molecules?

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