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.
The oxidation number of magnesium in magnesium oxide is 2. 1  Formula: MgO. 2  Hill system formula: Mg 1 O 1. 3  CAS registry number: [1309-48-4].4  Formula weight: 40.304. 5  Class: oxide. 6  Colour: white.7  Appearance: crystalline solid. 8  Melting point: 2830Â°C. 9  Boiling point: 3600Â°C. 10  Density: 3600 kg m -3.he oxidation number of magnesium in magnesium oxide is 2. 1  Formula: MgO. 2  Hill system formula: Mg 1 O 1. 3  CAS registry number: [1309-48-4]. 4  Formula weight: 40.304. 5  Class: oxide. 6  Colour: white. 7  Appearance: crystalline solid. 8  Melting point: 2830Â°C. 9  Boiling point: 3600Â°C. 10  Density: 3600 kg m -3.