140. Solving a chemistry problem
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Product description
IV. After appropriate processing of four standard steel samples containing chromium, their polarograms were taken and the following results were obtained - table 20.
Table 20
Samples 1 2 3 4
CCr,% 0.30 0.42 0.96 1.40
h, mm 8.0 10.0 20.0 28.0
Build a calibration graph and determine the percentage of chromium in the analyzed sample for the following task numbers - Table 21.
Table 21
Problem number hX, mm
71 22.0
Additional information
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