A sample of metallic element X, weighing 3.177 g, combines with 0.6015 L of O2 gas (at
Question:
A sample of metallic element X, weighing 3.177 g, combines with 0.6015 L of O2 gas (at normal pressure and 20.0oC) to form the metal oxide with the formula XO. If the density of O2 gas under these conditions is 1.330 g/L, what is the mass of this oxygen? The atomic mass of oxygen is 15.9994 amu. What is the atomic mass of X? What is the identity of X?
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