27. Solution to Chemistry Problem

27. Solution to Chemistry Problem

1. At temperatures not exceeding 673 K, magnesium in an air atmosphere forms MgO scale, which has some protective capacity. Check the validity of the PB criterion for assessing the protective properties of the MgO oxide layer. The densities of MgO and Mg are 3.65 and 1.74 g/cm3, respectively, the relative atomic mass of magnesium is 24.31 g.

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