When measuring the viscosity of solutions of polyisoprene in toluene, the following data were obtained using a capillary viscometer:
Concentration, g/l 0 1.41 1.94 3.24 3.89
Expiration time, s 171.5 216.1 234 282.6 308.1
Calculate the values of the relative, specific, reduced and intrinsic viscosity of the solution, as well as the Huggins viscometric constant.

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