Magnesium has three naturally occurring isotopes: Mg-24 that has a percent abundance of 78.99 % and a mass of 23.985 amu, Mg-25 that has a 10.00 % Abundance and a mass of 24.986 amu, and Mg-26 that has a percent abundance of 11.01% and a mass of 25.983 amu
Calculate the atomic mass for magnesium using the weighted average mass method.
Express your answer using two decimal places and include the appropriate units.