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.
Magnesium is the eleventh most abundant element by mass in the human body. Its ions are essential to all cells. They interact with polyphosphate compounds such as ATP, DNA, and RNA. Hundreds of enzymes require magnesium ions to function. Magnesium is flammable, burning at a temperature of approximately 3,100 Â°C (3,370 K; 5,610 Â°F), and the autoignition temperature of magnesium ribbon is approximately 473 Â°C (746 K; 883 Â°F). 2  It produces intense, bright, white light when it burns.