137. Задачка по химии №013 715
Determine the mass fraction (%) of tungsten in steel, if the following results were obtained during photometry by the method of three standards
Parameter standard test sample
ω (Mn),% 0.87 1.37 2.19?
SFe 0.388 0.634 0.774 0.786
SMn 0.462 0.464 0.424 0.452
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