Examine the figure below. Atomic percent magnesium Weight percent magnesium (i) State the phases that will be present in each stage if the following process path is followed. (For each stage, select all phases that apply.) 1. 500C,20wt%Mg 2. 500C,80wt%Mg 3. 200C,80wt%Mg 500C,20 wt %Mg L 500C,80 wt %Mg L 200C,80wt%Mg L