56. Solving a chemistry problem

245. A butane chromatogram was obtained on a column with a stationary phase mass of 3.829 g. The carrier gas velocity measured by a foam flow meter was 60 ml/min, the speed of the chart recorder tape was 720 mm/h. Column temperature 120 °C, ambient temperature 24 °C (partial pressure of water vapor at this temperature is 23.1 mmHg), atmospheric pressure 762 mmHg. The distance from the moment of sample injection to the exit of the maximum of the peaks of the nonsorbable component and propane is 0.8 and 3.4 mm, respectively. Find the values of specific retention volumes.