Issued as a cumulative or non-cumulative L/C, the former allows for unused credit amounts to rollover into subsequent periods while the latter maintains a fixed amount of credit available each period.
average atomic mass of magnesium is 24.3 g/mole so 24.3 X 1.56 X1021 / 6.02 X1023 = .063 grams.
What is the molar mass of Fe2O3? Magnesium is the 12th element in the periodic table and is classified as an alkaline earth metal. It is one of the eight most abundant elements in the Earth's crust and one of the nine most abundant elements in the universe overall.