Aluminum is measured spectroscopically using xylenol orange. Xylenol orange reacts with Al3+ to form a colored complex that adsorbs light at 536 nm. A plot (Y=0.1635x + 0.2014)) was created by mixing 2 mL of 1mM xylenol orange with 10 mL of a pH 3.4 buffer and with 5.00 mL of sample and then 0.00 to 3.00 mL of a 5.68 mg/L aluminum standard (seven different solution). The solutions are briefly heated in a boiling water bath, cooled, and then diluted to 25.00 mL.

What is the concentration of aluminum (26.98 g/mol) in the sample in units of mg/L and molarity?