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An oxyacetylene flame is often used in the welding of metals. Estimate the flame temperature produced by the reaction.
2C2H2(g) + 5O2(g) --> 4CO2(g) + 2H2O(g)

Assume the heat generated from this reaction is all used to heat the products. (Hint: First calculate the value of DeltarH for the reaction. Next look up the heat capacities of the products. Assume the heat capacities are temperature independent)

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