Problem: S(s) + O2(g) → SO2 (g)      ∆H = ‐296.8 kJ2SO2 + O2 → 2SO3             ∆H = ‐198.4 kJWrite the equation for the formation of sulfur trioxide gas from sulfur solid and oxygen. What is the ∆H of that equation?  

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S(s) + O2(g) → SO2 (g)      ∆H = ‐296.8 kJ

2SO2 + O2 → 2SO3             ∆H = ‐198.4 kJ

Write the equation for the formation of sulfur trioxide gas from sulfur solid and oxygen. What is the ∆H of that equation?

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