A3.540-g sample of an unknown metal m is burned in the presence of excess oxygen, producing the oxide m2o3(s) and liberating 18.56 kj of heat at constant pressure. what is the identity of the metal? 4m(s) + 3o2(g) → 2m2o3(s) substanceδh°f (kj/mol) yb2o3(s)–1814.6 tb2o3(s)–1865.2 sm2o3(s)–1823.0 sc2o3(s)–1908.8 y2o3(s)–1905.3 a) sm b) tb c) y d) sc e) yb
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A3.540-g sample of an unknown metal m is burned in the presence of excess oxygen, producing the oxid...
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