the experiment we used is precent copper n brass by using calibration curve

Duralumin is an alloy of aluminum (95%) and copper (5%). Could the technique used in this laboratory experiment to determine the percent copper also be used to determine the duralumin in a sample? Briefly explain. (Hint: Check the color of Aluminum nitrate) Duralumin is an alloy of aluminum (95%) and copper (5%). Could the technique used in this laboratory experiment to determine the percent copper also be used to determine the duralumin in a sample? Briefly explain. (Hint: Check the color of Aluminum nitrate)