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Choose the one alternative that best completes the statement or answers the question. Calculate ΔS° for the following reaction. N2(g) + 2 O2(g) →2 NO2(g) Species S°, J/(K ∙ mol) N2 (g) 191.5 O2 (g) 205.0 NO2 (g) 240.0 A) 15.5 J/K B) -156.5 J/K C) 636.5 J/K D) -121.5 J/K