38. Solving a chemistry problem

222. On the x-ray between the two reference lines are 6 spectral lines of the elements. The wavelengths of the reference lines are 600 and 1005 X, respectively. The distance between the fiducial marks is 66 mm. Determine the qualitative composition of the sample by measuring the distances between the first mark and the peaks of the spectral lines:
line no. 1 2 3 4 5 6
bi,mm 5.0 18.0 22.5 29.5 37.5 45.0