37. Решение задачи по химии №003 769

146. Determine the mass fraction (%) of nickel in steel, if the following results were obtained during photometry using the method of three standards:
Parameter Reference Analyzed sample
1 2 3
ω(Ni), % 0.56 1.42 1.97
ΔS 0.054 0.44 0.60 0.23

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