Sam was standardizing her 4mL iron solution 50 ppm concentra

Sam was standardizing her 4mL iron solution (50 ppm concentration) , but did not exactly add 4.0 mL. Instead he added 4.50mL. What was the final concentration of her standardized solution in ppm?

Solution

Final Concentration = 50 x 4 / 4.5 = 44.44 ppm