1. Determine the content of manganese and chromium in a ferrovanadium sample using the following data:
Standard CMn,% CCr,% ΔSMn,Fe ΔSCr,Fe
1 1.26 1.0 0.46 -0.10
2 1.06 0.68 0.34 -0.25
3 1.16 1.29 0.39 -0.01
Sample ? ? 0.42 -0.04

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