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Answer to Question #2146 in Molecular Physics | Thermodynamics for marvin

Question #2146
An Aluminum cup of 100cm3 capacity, is completely filled with ethanol at 25 degree C. How much ethanol, if any, will spill out of the cup if the temperature of both cup and ethanol is decreased to 22 degree C?
Expert's answer
Coefficient of volumeric thermal expansion of aluminium - 72x10-6 K-1
Coefficient of volumeric thermal expansion of ethanol - 750x10-6 K-1

<img src="/cgi-bin/mimetex.cgi?%5CDelta%20V_%7Bethanol%7D%20-%20%5CDelta%20V_%7Bal%7D%20=%20%28%5Calpha_%7Beth%7D%20-%20%5Calpha_%7Bal%7D%29%5CDelta%20T%20V%20=%20%28750%20-%2072%29%5Ctimes%2010%5E%7B-6%7D[1/K]*3[K]*100[cm%5E3]=%200.2034%20%5C%20[cm%5E3]" title="\Delta V_{ethanol} - \Delta V_{al} = (\alpha_{eth} - \alpha_{al})\Delta T V = (750 - 72)\times 10^{-6}[1/K]*3[K]*100[cm^3]= 0.2034 \ [cm^3]">

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