17. Решение задачи по химии №001 756

2. Find the% nickel content in steel according to the following NPP data:
Standard 1 2 3 sample
СNi, % 0.60 0.74 1.32 X
SNi 0.89 1.08 1.42 1.15
SFe 0.76 0.77 0.76 0.73

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