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Delta heat for a reaction

Assignment:

Evaluate Delta H (standard) for the reaction below at 25 degress celcius

SiO₂ (s) + 4HF (aq) >>>>>>> SiF₄ (g) + 2H₂O (l)

Delta H standard f (kj/mol) -910.9 -320.8 -1615 -285.8

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