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Is the system’s entropy change positive or negative ?. Water vapor deposits as ice crystals on a cold windowpane. A can of carbonated beverage loses its fizz (Consider the beverage but not the can as the system.). A glassblower heats glass to its softening temperature. Water boils.
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A can of carbonated beverage loses its fizz (Consider the beverage but not the can as the system.)
A teaspoon of sugar dissolves in a cup of coffee. (The system consists of both sugar and coffee.)
Calcium carbonate precipitates out of water in a cave to form stalactites and stalagmites. (Consider only the calcium carbonate to be the system.)
Which one has a higher entropy?1 or 2 Be able to explain why
Solid carbon dioxide at -78C • Carbon dioxide vapor at 0C
Solid sugar • Sugar dissolved in tea
100mL of water and 100mL of alcohol • 100mL of water and 100mL of alcohol mixed together
Cl2 (g) • P4 (g)
NH4NO3(s) • NH4NO3(aq)
AsH3(g) • Kr(g)
CH3OH(l) • C2H5OH(l)
Predict whether the entropy change would be positive or negative Be able to explain why