Your friend has dropped some iron nails into a container of sand .She is asking you to help her separate them. • Which separation technique would you advise her to use and why?
• What will you need to carry out this separation .

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.