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Chemistry, 22.06.2019 12:00, sophiaa23
Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.
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Chemistry, 24.06.2019 00:00, avadestinyy
For a process, the enthalpy change of the system is 173,000 j and its entropy change is 210 j/k. calculate the free energy change of the system at 298 k.
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