102. Solving a chemistry problem

1. When analyzing a mixture of gases, 2-methylpentane, methylamine, 2-methylbutane and propane were detected. Their peak areas in the chromatogram were 132, 84, 219 and 114 mm2, respectively. Hexane was added to the mixture as a standard substance with a concentration of 10 mg/l. The hexane peak area was 126 mm2. Calculate the concentration of components in the sample, taking into account that fi will be equal to 1.13; 1.26; 1.32 and 1.48 respectively.