2. Determine the percentage of silver in the copper cathode when analyzing the method of 3 standards in AESA, if the blackening of the analytical lines in the spectra of the sample and standards turned out to be equal:
СAg, % 0.10 0.21 0.37 x
SAg 0.38 0.46 0.62 0.44
SFe 0.69 0.7 0.68 0.70

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