What is the entropy of fusion, ΔSfusion [in J/(K⋅mol)] for sodium? The necessary data are the following: mp = 97.8 ∘C, bp = 883 ∘C, ΔHvap = 89.6kJ/mol, and ΔHfusion = 2.64kJ/mol.

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy