using the ratio method w$/$the external calibration method, your standard of $3\mathrm{.}010$ ppm gave a response of $520\mathrm{.}3,$ with the unknown yielding a response of $481\mathrm{.}4.$ find the concentration of the unknown.

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To answer this question we will use a method called external calibration This is a method used in an... View the full answer