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Indicate whether each of the following processes produces an increase or decrease in the entropy of the system:
(a) CO2(s) ? CO2(g)(b) CaO(s) + CO2(g) ? CaCO3(s)(c) HCl(g) + NH3(g) ? NH4Cl(s)(d) 2SO2(g) + O2(g) ? 2SO3(g)
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