irishscience

I have to do a prelab calculation and unable to do so, Question is: its not advised to prepare the salicylic acid solution directly, it is more stable to use the sodium salicylate. How many grams would be required to prepare one litre of a 1mg/ml salicylic acid stock solution in water ? any help would be great

its a capillary tube

How do I find % Absorption ?