CHEM 1410 Lecture Notes - Lecture 9: Magnesium Oxide, Joule, Reagent
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* use temperature and mass data to determine the appropriate level of significicance. Proper sig. figs. are required for d h in parts 2 -4. * for the check, required units are: c for temp, kj/k for heat capacity, and kj or kj/mol for enthalpies (d h). (do not put units into the check!) Recall that for a perfect calorimeter, no heat is exchanged between the system and its surroundings. In this case, the system is defined as the calorimeter and its contents. Thus, d h(system/surroundings) = 0 = (d h(reaction run) + cd t) where c is the heat capacity of the system. We use the same relationship d h(system/surroundings) = 0 = (d h(reaction run) + cd t) but this time we are solving for d h for the reaction between mg and acid.
