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I believe I have all parts of the problem solved correctly except for part d).


a) A particular metallic element, M, has a heat capacity of 0.36 J/g*K. It forms an oxide that contains 2.90g of M per a gram of oxygen. Using the law of Dulong and Petit, guess the molar mass of the metal M.
Molar mass = 64.44 g/mol

b) A particular metallic element, M, has a heat capacity of 0.36 J/g*K. It forms an oxide that contains 2.90g of M per a gram of oxygen. From the composition of the oxide ( 2.90g M /g of O) and the molar mass of oxygen ( 16g/mol), determine the mass of M that combines with each mole of oxygen.
Mass of M = 46.4 g M/mol O

c) Using your estimated atomic mass and previous answers, determine the empirical formula of the oxide.
= M2O3

d) Now that you know the composition of the oxide and its formula, what is the accurate value of the atomic mass of the metal M, and what is the identity of the metal M?