Without doing any calculations, determine the signs of S sys and S sur r for each chemical

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Without doing any calculations, determine the signs of ΔSsys and ΔSsurr for each chemical reaction. In addition, predict under what temperatures (all temperatures, low temperatures, or high temperatures), if any, the reaction is spontaneous.

a. 2 CO(g) + O(g) 2 CO(g) b. 2 NO(g)  2NO(g) + O(g) AH AH = -566.0 kJ = +113.1 kJ c. 2 H(g) + O(g)  2HO(g)

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