Chemistry Problem!!!?

Posted on 2015-11-18 06:33:00 in Chemistry by DARREN LEE

An aspirin tablet is weighed and measures: .357g
It is transferred to a 125 mL Erlenmeyer flask.
You add 10mL of 1.0M sodium hydroxide and 10mL distilled water, and then heat to hydrolyze the sample, then cool.
20mL of .10M nitric acid is added.

Contents are transferred to a 250 Erlenmeyer flask and brought up to volume using the .10 M nitric acid.
Pipet 10mL of the solution and transfer to a 100mL volumetric flask, bring up to volume with .10 M nitric acid.

concentration of 8mL sample (of the 100mL solution) plus 2mL of .10 M nitric acid and 1mL of iron color reagant: 0.001337

what is the concentration of the 100mL tablet solution??? i have no idea how to do this plss help

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